[Bug 2131212] Re: /usr/lib/cargo/bin/coreutils/factor fails for large integers
Julian Andres Klode
2131212 at bugs.launchpad.net
Tue Dec 2 10:15:00 UTC 2025
** Changed in: rust-coreutils (Ubuntu)
Status: New => Triaged
** Changed in: rust-coreutils (Ubuntu)
Importance: Undecided => Medium
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https://bugs.launchpad.net/bugs/2131212
Title:
/usr/lib/cargo/bin/coreutils/factor fails for large integers
Status in rust-coreutils package in Ubuntu:
Triaged
Bug description:
Description: Ubuntu 25.10
Release: 25.10
Rust version takes 19s compared to the gnu version 1.8s and rust
version does not print the factors
$ time /usr/lib/cargo/bin/coreutils/factor
15111234931751377131713914373267893176342349831
/usr/lib/cargo/bin/coreutils/factor: Factorization incomplete.
Remainders exists.
real 0m19.387s
user 0m19.148s
sys 0m0.009s
using the GNU core utils
$ time /usr/bin/gnufactor 15111234931751377131713914373267893176342349831
15111234931751377131713914373267893176342349831: 29 127 115319 1971799 82465494029827 218807630881735711
real 0m1.800s
user 0m1.787s
sys 0m0.002s
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