/usr/share/doc/ is in libmath-prime-util-perl 0.60-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/doc/libmath-prime-util-perl/
/usr/share/doc/libmath-prime-util-perl/NEWS.Debian.gz
/usr/share/doc/libmath-prime-util-perl/TODO.gz
/usr/share/doc/libmath-prime-util-perl/changelog.Debian.gz
/usr/share/doc/libmath-prime-util-perl/changelog.gz
/usr/share/doc/libmath-prime-util-perl/copyright
/usr/share/doc/libmath-prime-util-perl/examples/
/usr/share/doc/libmath-prime-util-perl/examples/README
/usr/share/doc/libmath-prime-util-perl/examples/abundant.pl
/usr/share/doc/libmath-prime-util-perl/examples/csrand-gmp.pl
/usr/share/doc/libmath-prime-util-perl/examples/csrand.pl
/usr/share/doc/libmath-prime-util-perl/examples/fibprime-mce.pl
/usr/share/doc/libmath-prime-util-perl/examples/fibprime-serial.pl
/usr/share/doc/libmath-prime-util-perl/examples/fibprime-threads.pl
/usr/share/doc/libmath-prime-util-perl/examples/find_mr_bases.pl
/usr/share/doc/libmath-prime-util-perl/examples/inverse_totient.pl
/usr/share/doc/libmath-prime-util-perl/examples/ktuplet-threads.pl
/usr/share/doc/libmath-prime-util-perl/examples/ktuplet.pl
/usr/share/doc/libmath-prime-util-perl/examples/numseqs.pl.gz
/usr/share/doc/libmath-prime-util-perl/examples/porter.pl
/usr/share/doc/libmath-prime-util-perl/examples/project_euler_010.pl
/usr/share/doc/libmath-prime-util-perl/examples/project_euler_021.pl
/usr/share/doc/libmath-prime-util-perl/examples/project_euler_037.pl
/usr/share/doc/libmath-prime-util-perl/examples/project_euler_047.pl
/usr/share/doc/libmath-prime-util-perl/examples/project_euler_049.pl
/usr/share/doc/libmath-prime-util-perl/examples/project_euler_069.pl
/usr/share/doc/libmath-prime-util-perl/examples/project_euler_070.pl
/usr/share/doc/libmath-prime-util-perl/examples/project_euler_072.pl
/usr/share/doc/libmath-prime-util-perl/examples/project_euler_095.pl
/usr/share/doc/libmath-prime-util-perl/examples/project_euler_131.pl
/usr/share/doc/libmath-prime-util-perl/examples/project_euler_142.pl
/usr/share/doc/libmath-prime-util-perl/examples/project_euler_193.pl
/usr/share/doc/libmath-prime-util-perl/examples/project_euler_211.pl
/usr/share/doc/libmath-prime-util-perl/examples/project_euler_214.pl
/usr/share/doc/libmath-prime-util-perl/examples/project_euler_342.pl
/usr/share/doc/libmath-prime-util-perl/examples/project_euler_357.pl
/usr/share/doc/libmath-prime-util-perl/examples/sophie_germain.pl
/usr/share/doc/libmath-prime-util-perl/examples/twin_primes.pl
/usr/share/doc/libmath-prime-util-perl/examples/verify-cert.pl.gz
/usr/share/doc/libmath-prime-util-perl/examples/verify-gmp-ecpp-cert.pl
/usr/share/doc/libmath-prime-util-perl/examples/verify-primegaps.pl.gz
/usr/share/doc/libmath-prime-util-perl/examples/verify-sage-ecpp-cert.pl