[Bug 2131212] Re: /usr/lib/cargo/bin/coreutils/factor fails for large integers

[Simon Johnsson]

I have verified the bug created an issue for it upstream:
https://github.com/uutils/coreutils/issues/10262

** Bug watch added: github.com/uutils/coreutils/issues #10262
   https://github.com/uutils/coreutils/issues/10262

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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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