diff --git a/.github/workflows/ci-sage.yml b/.github/workflows/ci-sage.yml
deleted file mode 100644
index 425451f8..00000000
--- a/.github/workflows/ci-sage.yml
+++ /dev/null
@@ -1,347 +0,0 @@
-name: Run Sage CI for Linux/Cygwin/macOS
-
-## This GitHub Actions workflow provides:
-##
-##  - portability testing, by building and testing this project on many platforms
-##    (Linux variants and Cygwin), each with two configurations (installed packages),
-##
-##  - continuous integration, by building and testing other software
-##    that depends on this project.
-##
-## It runs on every pull request and push of a tag to the GitHub repository.
-##
-## The testing can be monitored in the "Actions" tab of the GitHub repository.
-##
-## After all jobs have finished (or are canceled) and a short delay,
-## tar files of all logs are made available as "build artifacts".
-##
-## This GitHub Actions workflow uses the portability testing framework
-## of SageMath (https://www.sagemath.org/).  For more information, see
-## https://doc.sagemath.org/html/en/developer/portability_testing.html
-
-## The workflow consists of two jobs:
-##
-##  - First, it builds a source distribution of the project
-##    and generates a script "update-pkgs.sh".  It uploads them
-##    as a build artifact named upstream.
-##
-##  - Second, it checks out a copy of the SageMath source tree.
-##    It downloads the upstream artifact and replaces the project's
-##    package in the SageMath distribution by the newly packaged one
-##    from the upstream artifact, by running the script "update-pkgs.sh".
-##    Then it builds a small portion of the Sage distribution.
-##
-## Many copies of the second step are run in parallel for each of the tested
-## systems/configurations.
-
-#on: [push, pull_request]
-
-on:
-  pull_request:
-    types: [opened, synchronize]
-  push:
-    tags:
-      - '*'
-  workflow_dispatch:
-    # Allow to run manually
-
-env:
-  # Ubuntu packages to install so that the project's "setup.py sdist" can succeed
-  DIST_PREREQ: cmake
-  # Name of this project in the Sage distribution
-  SPKG:        primecount
-  # Sage distribution packages to build
-  TARGETS_PRE: build/make/Makefile
-  TARGETS:     SAGE_CHECK=no SAGE_CHECK_PACKAGES=primecount primecount
-  TARGETS_OPTIONAL: build/make/Makefile
-  # Standard setting: Test the current beta release of Sage:
-  SAGE_REPO:   sagemath/sage
-  SAGE_REF:    develop
-  # Temporarily test with the branch from sage ticket https://trac.sagemath.org/ticket/25009,
-  # which adds primesieve and primecount packages
-  # (this is a no-op after that ticket is merged)
-  #SAGE_TRAC_GIT: https://github.com/sagemath/sagetrac-mirror.git
-  #SAGE_TICKET: 25009
-  #REMOVE_PATCHES: "*"
-
-jobs:
-
-  dist:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Check out ${{ env.SPKG }}
-        uses: actions/checkout@v2
-        with:
-          path: build/pkgs/${{ env.SPKG }}/src
-      - name: Install prerequisites
-        run: |
-          sudo DEBIAN_FRONTEND=noninteractive apt-get update
-          sudo DEBIAN_FRONTEND=noninteractive apt-get install $DIST_PREREQ
-      - name: Run make dist, prepare upstream artifact
-        run: |
-          (cd build/pkgs/${{ env.SPKG }}/src && git archive --format=tar.gz --prefix=${{ env.SPKG }}-git/ HEAD > ${{ env.SPKG }}-git.tar.gz) \
-          && mkdir -p upstream && cp build/pkgs/${{ env.SPKG }}/src/*.tar.gz upstream/${{ env.SPKG }}-git.tar.gz \
-          && echo "sage-package create ${{ env.SPKG }} --version git --tarball ${{ env.SPKG }}-git.tar.gz --type=standard" > upstream/update-pkgs.sh \
-          && if [ -n "${{ env.REMOVE_PATCHES }}" ]; then echo "(cd ../build/pkgs/${{ env.SPKG }}/patches && rm -f ${{ env.REMOVE_PATCHES }}; :)" >> upstream/update-pkgs.sh; fi \
-          && ls -l upstream/
-      - uses: actions/upload-artifact@v2
-        with:
-          path: upstream
-          name: upstream
-
-  cygwin:
-    env:
-      STAGE: i-a
-      LOCAL_ARTIFACT_NAME: sage-local-commit-${{ github.sha }}-cygwin-${{ matrix.pkgs }}
-      LOGS_ARTIFACT_NAME: logs-commit-${{ github.sha }}-cygwin-${{ matrix.pkgs }}
-      MAKE: make -j8
-      SAGE_NUM_THREADS: 3
-      SAGE_CHECK: yes
-      SAGE_CHECK_PACKAGES: "!cython,!r,!python3,!python2,!nose,!pathpy,!gap,!cysignals,!linbox,!git,!ppl"
-      CYGWIN: winsymlinks:native
-      CONFIGURE_ARGS: --enable-experimental-packages --enable-download-from-upstream-url
-      SAGE_FAT_BINARY: yes
-      SAGE_LOCAL: /opt/sage-primesieve-${{ github.sha }}
-
-    runs-on: windows-latest
-
-    needs: [dist]
-
-    strategy:
-      fail-fast: false
-      matrix:
-        pkgs: [minimal, standard]
-    steps:
-    - run: |
-        git config --global core.autocrlf false
-        git config --global core.symlinks true
-    - name: install cygwin with choco
-      shell: bash {0}
-      run: |
-        choco --version
-        choco install git python3 --source cygwin
-    - name: Check out SageMath
-      uses: actions/checkout@v2
-      with:
-        repository: ${{ env.SAGE_REPO }}
-        ref: ${{ env.SAGE_REF }}
-        fetch-depth: 2000
-      if: env.SAGE_REPO != ''
-    - name: Check out git-trac-command
-      uses: actions/checkout@v2
-      with:
-        repository: sagemath/git-trac-command
-        path: git-trac-command
-      if: env.SAGE_TRAC_GIT != ''
-    - name: Check out SageMath from trac.sagemath.org
-      shell: bash {0}
-      # Random sleep and retry to limit the load on trac.sagemath.org
-      run: |
-        git config --global user.email "ci-sage@example.com"
-        git config --global user.name "ci-sage workflow"
-        if [ ! -d .git ]; then git init; fi; git remote add trac ${{ env.SAGE_TRAC_GIT }} && x=1 && while [ $x -le 5 ]; do x=$(( $x + 1 )); sleep $(( $RANDOM % 60 + 1 )); if git-trac-command/git-trac fetch $SAGE_TICKET; then git merge FETCH_HEAD || echo "(ignored)"; exit 0; fi; sleep 40; done; exit 1
-      if: env.SAGE_TRAC_GIT != ''
-    - uses: actions/download-artifact@v2
-      with:
-        path: upstream
-        name: upstream
-    - name: install minimal prerequisites with choco
-      shell: bash {0}
-      run: |
-        choco --version
-        PACKAGES="python38 python38-pip"
-        choco install $PACKAGES --source cygwin
-    - name: Update Sage packages from upstream artifact
-      run: |
-        C:\\tools\\cygwin\\bin\\bash -l -c 'cd $(cygpath -u "$GITHUB_WORKSPACE") && ls -l upstream/ && export PATH="$(pwd)/build/bin:$PATH:/usr/local/bin:/usr/bin" && (cd upstream && bash -x update-pkgs.sh) && git diff'
-    - name: tox
-      run: |
-        C:\\tools\\cygwin\\bin\\bash -l -x -c 'python3.8 -m pip install tox'
-        C:\\tools\\cygwin\\bin\\bash -l -x -c 'cd $(cygpath -u "$GITHUB_WORKSPACE") && PREFIX="${{ env.SAGE_LOCAL }}" tox -e local-cygwin-choco-${{ matrix.pkgs }} -- $TARGETS'
-    - name: Prepare logs artifact
-      shell: bash
-      run: |
-        mkdir -p "artifacts/$LOGS_ARTIFACT_NAME"; for a in local/var/tmp/sage/build/*; do if [ -d $a ]; then tar -c --remove-files -f "artifacts/$LOGS_ARTIFACT_NAME/$(basename $a).tar" $a || tar -c --ignore-failed-read -f "artifacts/$LOGS_ARTIFACT_NAME/$(basename $a)-save.tar" $a ; fi; done; cp -r logs/*  "artifacts/$LOGS_ARTIFACT_NAME"
-      if: always()
-    - uses: actions/upload-artifact@v2
-      with:
-        path: artifacts
-        name: ${{ env.LOGS_ARTIFACT_NAME }}
-      if: always()
-    - name: Print out logs for immediate inspection
-      # The markup in the output is a GitHub Actions logging command
-      # https://help.github.com/en/actions/automating-your-workflow-with-github-actions/development-tools-for-github-actions
-      shell: bash
-      run: |
-        find "artifacts/$LOGS_ARTIFACT_NAME" -type f -name "*.log" -exec sh -c 'if tail -20 "{}" 2>/dev/null | grep "^Error" >/dev/null; then echo :":"error file={}:":" ==== LOG FILE {} CONTAINS AN ERROR ====; cat {} ; fi' \;
-      if: always()
-    - name: Prepare sage-local artifact
-      # We specifically use the cygwin tar so that symlinks are saved/restored correctly on Windows.
-      # We remove the $SAGE_LOCAL/lib64 link, which will be recreated by the next stage.
-      run: |
-        C:\\tools\\cygwin\\bin\\bash -l -c 'cd $(cygpath -u "$GITHUB_WORKSPACE") && rm -f "${{ env.SAGE_LOCAL }}"/lib64; tar -cf /tmp/sage-local-${{ env.STAGE }}.tar --remove-files "${{ env.SAGE_LOCAL }}"'
-      if: always()
-    - uses: actions/upload-artifact@v2
-      # upload-artifact@v2 does not support whitespace in file names.
-      # so we tar up the directory ourselves
-      with:
-        path: C:\\tools\\cygwin\\tmp\\sage-local-${{ env.STAGE }}.tar
-        name: ${{ env.LOCAL_ARTIFACT_NAME }}
-      if: always()
-
-  docker:
-    runs-on: ubuntu-latest
-    needs: [dist]
-    strategy:
-      fail-fast: false
-      max-parallel: 32
-      matrix:
-        tox_system_factor: [ubuntu-xenial, ubuntu-bionic, ubuntu-focal, ubuntu-groovy, ubuntu-hirsute, ubuntu-impish, debian-stretch, debian-buster, debian-bullseye, debian-sid, linuxmint-18, linuxmint-19, linuxmint-19.3, linuxmint-20.1, linuxmint-20.2, fedora-26, fedora-27, fedora-28, fedora-29, fedora-30, fedora-31, fedora-32, fedora-33, fedora-34, fedora-35, centos-8, gentoo, gentoo-python3.7, archlinux-latest, opensuse-15, opensuse-15.3, opensuse-tumbleweed, slackware-14.2, conda-forge, ubuntu-bionic-i386, manylinux-2_24-i686, debian-buster-i386, raspbian-buster-armhf]
-        tox_packages_factor: [minimal, standard]
-    env:
-      TOX_ENV: docker-${{ matrix.tox_system_factor }}-${{ matrix.tox_packages_factor }}
-      LOGS_ARTIFACT_NAME: logs-commit-${{ github.sha }}-tox-docker-${{ matrix.tox_system_factor }}-${{ matrix.tox_packages_factor }}
-      DOCKER_TARGETS: configured with-targets with-targets-optional
-    steps:
-      - name: Check out SageMath
-        uses: actions/checkout@v2
-        with:
-          repository: ${{ env.SAGE_REPO }}
-          ref: ${{ env.SAGE_REF }}
-          fetch-depth: 2000
-        if: env.SAGE_REPO != ''
-      - name: Check out git-trac-command
-        uses: actions/checkout@v2
-        with:
-          repository: sagemath/git-trac-command
-          path: git-trac-command
-        if: env.SAGE_TRAC_GIT != ''
-      - name: Check out SageMath from trac.sagemath.org
-        shell: bash {0}
-        run: |
-          git config --global user.email "ci-sage@example.com"
-          git config --global user.name "ci-sage workflow"
-          if [ ! -d .git ]; then git init; fi; git remote add trac ${{ env.SAGE_TRAC_GIT }} && x=1 && while [ $x -le 5 ]; do x=$(( $x + 1 )); sleep $(( $RANDOM % 60 + 1 )); if git-trac-command/git-trac fetch $SAGE_TICKET; then git merge FETCH_HEAD || echo "(ignored)"; exit 0; fi; sleep 40; done; exit 1
-        if: env.SAGE_TRAC_GIT != ''
-      - uses: actions/download-artifact@v2
-        with:
-          path: upstream
-          name: upstream
-      - name: Install test prerequisites
-        run: |
-          sudo DEBIAN_FRONTEND=noninteractive apt-get update
-          sudo DEBIAN_FRONTEND=noninteractive apt-get install tox python3-setuptools
-      - name: Update Sage packages from upstream artifact
-        run: |
-          (export PATH=$(pwd)/build/bin:$PATH; (cd upstream && bash -x update-pkgs.sh) && sed -i.bak '/upstream/d' .dockerignore && echo "/:toolchain:/i ADD upstream upstream" | sed -i.bak -f - build/bin/write-dockerfile.sh && git diff)
-      - name: Configure and build Sage distribution within a Docker container
-        run: |
-          set -o pipefail; EXTRA_DOCKER_BUILD_ARGS="--build-arg USE_MAKEFLAGS=\"-k V=0 SAGE_NUM_THREADS=3\"" tox -e $TOX_ENV -- $TARGETS 2>&1 | sed "/^configure: notice:/s|^|::warning file=artifacts/$LOGS_ARTIFACT_NAME/config.log::|;/^configure: warning:/s|^|::warning file=artifacts/$LOGS_ARTIFACT_NAME/config.log::|;/^configure: error:/s|^|::error file=artifacts/$LOGS_ARTIFACT_NAME/config.log::|;"
-      - name: Copy logs from the Docker image or build container
-        run: |
-          mkdir -p "artifacts/$LOGS_ARTIFACT_NAME"
-          cp -r .tox/$TOX_ENV/Dockerfile .tox/$TOX_ENV/log "artifacts/$LOGS_ARTIFACT_NAME"
-          if [ -f .tox/$TOX_ENV/Dockertags ]; then CONTAINERS=$(docker create $(tail -1 .tox/$TOX_ENV/Dockertags) /bin/bash || true); fi
-          if [ -n "$CONTAINERS" ]; then for CONTAINER in $CONTAINERS; do for ARTIFACT in /sage/logs; do docker cp $CONTAINER:$ARTIFACT artifacts/$LOGS_ARTIFACT_NAME && HAVE_LOG=1; done; if [ -n "$HAVE_LOG" ]; then break; fi; done; fi
-        if: always()
-      - uses: actions/upload-artifact@v2
-        with:
-          path: artifacts
-          name: ${{ env.LOGS_ARTIFACT_NAME }}
-        if: always()
-      - name: Print out logs for immediate inspection
-        # and markup the output with GitHub Actions logging commands
-        run: |
-          .github/workflows/scan-logs.sh "artifacts/$LOGS_ARTIFACT_NAME"
-        if: always()
-      - name: Push Docker images
-        run: |
-          if [ -f .tox/$TOX_ENV/Dockertags ]; then
-            TOKEN="${{ secrets.DOCKER_PKG_GITHUB_TOKEN }}"
-            if [ -z "$TOKEN" ]; then
-              TOKEN="${{ secrets.GITHUB_TOKEN }}"
-            fi
-            echo "$TOKEN" | docker login docker.pkg.github.com -u ${{ github.actor }} --password-stdin
-            for a in $(cat .tox/$TOX_ENV/Dockertags); do
-              FULL_TAG=docker.pkg.github.com/$(echo ${{ github.repository }}|tr 'A-Z' 'a-z')/$a
-              docker tag $a $FULL_TAG
-              echo Pushing $FULL_TAG
-              docker push $FULL_TAG
-            done || echo "(Ignoring errors)"
-          fi
-        if: always()
-
-  macos:
-
-    runs-on: macos-latest
-    strategy:
-      fail-fast: false
-      max-parallel: 4
-      matrix:
-        os: [ macos-10.15, macos-11.0 ]
-        tox_system_factor: [homebrew-macos, homebrew-macos-python3_xcode, homebrew-macos-python3_xcode-nokegonly, conda-forge-macos]
-        tox_packages_factor: [minimal, standard]
-        xcode_version_factor: [11.7, default, 12.3]
-
-    needs: [dist]
-
-    env:
-      TOX_ENV: local-${{ matrix.tox_system_factor }}-${{ matrix.tox_packages_factor }}
-      LOGS_ARTIFACT_NAME: logs-commit-${{ github.sha }}-tox-local-${{ matrix.tox_system_factor }}-${{ matrix.tox_packages_factor }}-${{ matrix.os }}-xcode_${{ matrix.xcode_version_factor }}
-      DOCKER_TARGETS: configured with-targets with-targets-optional
-
-    steps:
-
-      - name: Select Xcode version
-        run: |
-          if [ ${{ matrix.xcode_version_factor }} != default ]; then sudo xcode-select -s /Applications/Xcode_${{ matrix.xcode_version_factor }}.app; fi
-      - name: Check out SageMath
-        uses: actions/checkout@v2
-        with:
-          repository: ${{ env.SAGE_REPO }}
-          ref: ${{ env.SAGE_REF }}
-          fetch-depth: 2000
-        if: env.SAGE_REPO != ''
-      - name: Check out git-trac-command
-        uses: actions/checkout@v2
-        with:
-          repository: sagemath/git-trac-command
-          path: git-trac-command
-        if: env.SAGE_TRAC_GIT != ''
-      - name: Check out SageMath from trac.sagemath.org
-        shell: bash {0}
-        run: |
-          git config --global user.email "ci-sage@example.com"
-          git config --global user.name "ci-sage workflow"
-          if [ ! -d .git ]; then git init; fi; git remote add trac ${{ env.SAGE_TRAC_GIT }} && x=1 && while [ $x -le 5 ]; do x=$(( $x + 1 )); sleep $(( $RANDOM % 60 + 1 )); if git-trac-command/git-trac fetch $SAGE_TICKET; then git merge FETCH_HEAD || echo "(ignored)"; exit 0; fi; sleep 40; done; exit 1
-        if: env.SAGE_TRAC_GIT != ''
-      - uses: actions/download-artifact@v2
-        with:
-          path: upstream
-          name: upstream
-      - name: Update Sage packages from upstream artifact
-        run: |
-          (export PATH=$(pwd)/build/bin:$PATH; (cd upstream && bash -x update-pkgs.sh) && git diff)
-
-      - name: Install test prerequisites
-        run: |
-          brew install tox
-      - name: Build and test with tox
-        # We use a high parallelization on purpose in order to catch possible parallelization bugs in the build scripts.
-        # For doctesting, we use a lower parallelization to avoid timeouts.
-        run: |
-          MAKE="make -j12" tox -e $TOX_ENV -- SAGE_NUM_THREADS=4 $TARGETS
-      - name: Prepare logs artifact
-        run: |
-          mkdir -p "artifacts/$LOGS_ARTIFACT_NAME"; cp -r .tox/*/log "artifacts/$LOGS_ARTIFACT_NAME"
-        if: always()
-      - uses: actions/upload-artifact@v1
-        with:
-          path: artifacts
-          name: ${{ env.LOGS_ARTIFACT_NAME }}
-        if: always()
-      - name: Print out logs for immediate inspection
-        # and markup the output with GitHub Actions logging commands
-        run: |
-          .github/workflows/scan-logs.sh "artifacts/$LOGS_ARTIFACT_NAME"
-        if: always()
diff --git a/ChangeLog b/ChangeLog
index 2ecd1ffc..c79efc69 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,8 @@
 Changes in primecount-7.13, 2024-04-08
 
+* Delete ci-sage.yml, it has not been updated in 3 years and I
+  don't want to maintain it. I feel like this CI script should
+  be part of SageMath, not primecount.
 * Added AVX512 runtime dispatching for x86 CPUs.
 * CMakeLists.txt: New WITH_MULTIARCH option (default ON).
 * Sieve_count.cpp: New AVX512 popcount algorithm for x86 CPUs.