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authorJacob McDonnell <jacob@jacobmcdonnell.com>2026-04-25 19:54:44 -0400
committerJacob McDonnell <jacob@jacobmcdonnell.com>2026-04-25 19:54:44 -0400
commita9157ce950dfe2fc30795d43b9d79b9d1bffc48b (patch)
tree9df484304b560466d145e662c1c254ff0e9ae0ba /static/openbsd/man6/factor.6
parent160aa82b2d39c46ad33723d7d909cb4972efbb03 (diff)
docs: Added All OpenBSD Manuals
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+.\" $OpenBSD: factor.6,v 1.13 2015/12/30 14:07:53 tb Exp $
+.\"
+.\" Copyright (c) 1989, 1993
+.\" The Regents of the University of California. All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Landon Curt Noll.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\" notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\" notice, this list of conditions and the following disclaimer in the
+.\" documentation and/or other materials provided with the distribution.
+.\" 3. Neither the name of the University nor the names of its contributors
+.\" may be used to endorse or promote products derived from this software
+.\" without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\" @(#)factor.6 8.1 (Berkeley) 5/31/93
+.\"
+.\"
+.\" By: Landon Curt Noll chongo@toad.com, ...!{sun,tolsoft}!hoptoad!chongo
+.\"
+.\" chongo <for a good prime call: 391581 * 2^216193 - 1> /\oo/\
+.\"
+.Dd $Mdocdate: December 30 2015 $
+.Dt FACTOR 6
+.Os
+.Sh NAME
+.Nm factor ,
+.Nm primes
+.Nd factor a number, generate primes
+.Sh SYNOPSIS
+.Nm factor
+.Op Ar number ...
+.Nm primes
+.Op Ar start Op Ar stop
+.Sh DESCRIPTION
+The
+.Nm
+utility will factor 64-bit positive integers.
+When a number is factored, it is printed, followed by a
+.Sq \&: ,
+and the list of its prime factors in ascending order, on a single line.
+Every prime factor is printed as often as it divides the number.
+.Pp
+When
+.Nm
+is invoked with one or more arguments,
+each argument will be factored.
+.Pp
+When
+.Nm
+is invoked with no arguments,
+.Nm
+reads numbers, one per line, from standard input, until end of file or error.
+White-space and empty lines are ignored.
+Numbers may be preceded by a single +.
+After a number is read, it is factored.
+Input lines must not be longer than 99 characters.
+.Pp
+The
+.Nm primes
+utility prints primes in ascending order, one per line, starting at or above
+.Ar start
+and continuing until, but not including
+.Ar stop .
+The
+.Ar start
+value must be at least 0 and not greater than
+.Ar stop .
+The
+.Ar stop
+value must not be greater than 4294967295.
+The default value of
+.Ar stop
+is 4294967295.
+.Pp
+When the
+.Nm primes
+utility is invoked with no arguments,
+.Ar start
+is read from standard input.
+.Ar stop
+is taken to be 4294967295.
+The
+.Ar start
+value may be preceded by a single +.
+The input line must not be longer than 99 characters.
+.Sh BUGS
+.Nm factor
+cannot handle the
+.Dq 10 most wanted
+factor list;
+.Nm primes
+won't get you a world record.