# phpman > man > FACTOR(1)

> **TLDR:** Print the prime factorization of a number.
>
- Display the prime-factorization of a number:
  `factor {{number}}`
- Take the input from `stdin` if no argument is specified:
  `echo {{number}} | factor`

*Source: tldr-pages*

---

[FACTOR(1)](https://www.chedong.com/phpMan.php/man/FACTOR/1/markdown)                                   User Commands                                  [FACTOR(1)](https://www.chedong.com/phpMan.php/man/FACTOR/1/markdown)



## NAME
       factor - factor numbers

## SYNOPSIS
       **factor** [_NUMBER_]...
       **factor** _OPTION_

## DESCRIPTION
       Print  the prime factors of each specified integer NUMBER.  If none are specified on the com‐
       mand line, read them from standard input.

       **--help** display this help and exit

### --version
              output version information and exit

## AUTHOR
       Written by Paul Rubin, Torbjorn Granlund, and Niels Moller.

## REPORTING BUGS
       GNU coreutils online help: <<https://www.gnu.org/software/coreutils/>>
       Report any translation bugs to <<https://translationproject.org/team/>>

## COPYRIGHT
       Copyright © 2020 Free Software Foundation, Inc.  License GPLv3+: GNU GPL version 3  or  later
       <<https://gnu.org/licenses/gpl.html>>.
       This  is free software: you are free to change and redistribute it.  There is NO WARRANTY, to
       the extent permitted by law.

## SEE ALSO
       Full documentation <<https://www.gnu.org/software/coreutils/factor>>
       or available locally via: info '(coreutils) factor invocation'



GNU coreutils 8.32                          January 2026                                   [FACTOR(1)](https://www.chedong.com/phpMan.php/man/FACTOR/1/markdown)