factor.6 (686fb94a00297bf9ff49d93b948925552a2ce8e0) factor.6 (526473251ee3dd5ab71975d6b9780e00a4660b64)
1.\" Copyright (c) 1989, 1993
2.\" The Regents of the University of California. All rights reserved.
3.\"
4.\" This code is derived from software contributed to Berkeley by
5.\" Landon Curt Noll.
6.\"
7.\" Redistribution and use in source and binary forms, with or without
8.\" modification, are permitted provided that the following conditions

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31.\" @(#)factor.6 8.1 (Berkeley) 5/31/93
32.\"
33.\" $FreeBSD$
34.\"
35.\" By: Landon Curt Noll chongo@toad.com, ...!{sun,tolsoft}!hoptoad!chongo
36.\"
37.\" chongo <for a good prime call: 391581 * 2^216193 - 1> /\oo/\
38.\"
1.\" Copyright (c) 1989, 1993
2.\" The Regents of the University of California. All rights reserved.
3.\"
4.\" This code is derived from software contributed to Berkeley by
5.\" Landon Curt Noll.
6.\"
7.\" Redistribution and use in source and binary forms, with or without
8.\" modification, are permitted provided that the following conditions

--- 22 unchanged lines hidden (view full) ---

31.\" @(#)factor.6 8.1 (Berkeley) 5/31/93
32.\"
33.\" $FreeBSD$
34.\"
35.\" By: Landon Curt Noll chongo@toad.com, ...!{sun,tolsoft}!hoptoad!chongo
36.\"
37.\" chongo <for a good prime call: 391581 * 2^216193 - 1> /\oo/\
38.\"
39.Dd October 10, 2002
39.Dd January 12, 2020
40.Dt FACTOR 6
41.Os
42.Sh NAME
43.Nm factor , primes
44.Nd factor a number, generate primes
45.Sh SYNOPSIS
46.Nm
47.Op Fl h

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62When
63.Nm
64is invoked with one or more arguments, each argument will be factored.
65.Pp
66When
67.Nm
68is invoked with no arguments,
69.Nm
40.Dt FACTOR 6
41.Os
42.Sh NAME
43.Nm factor , primes
44.Nd factor a number, generate primes
45.Sh SYNOPSIS
46.Nm
47.Op Fl h

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62When
63.Nm
64is invoked with one or more arguments, each argument will be factored.
65.Pp
66When
67.Nm
68is invoked with no arguments,
69.Nm
70reads numbers, one per line, from standard input, until end of file or error.
70reads numbers, one per line, from standard input until end of file or 0
71is entered or an error occurs.
71Leading white-space and empty lines are ignored.
72Leading white-space and empty lines are ignored.
73.Pp
72Numbers may be preceded by a single
73.Ql + .
74Numbers may be preceded by a single
75.Ql + .
76Numbers can be either decimal or hexadecimal strings where the longest
77leading substring is used.
74Numbers are terminated by a non-digit character (such as a newline).
78Numbers are terminated by a non-digit character (such as a newline).
79If the string contains only decimal digits, it is treated as a
80decimal representation for a number.
81A hexadecimal string can contain an optional
82.Em 0x
83or
84.Em 0X
85prefix.
75After a number is read, it is factored.
76.Pp
77The
78.Nm primes
79utility prints primes in ascending order, one per line, starting at or above
80.Ar start
81and continuing until, but not including
82.Ar stop .
83The
84.Ar start
85value must be at least 0 and not greater than
86.Ar stop .
87The
88.Ar stop
89value must not be greater than the maximum.
90The default and maximum value of
91.Ar stop
86After a number is read, it is factored.
87.Pp
88The
89.Nm primes
90utility prints primes in ascending order, one per line, starting at or above
91.Ar start
92and continuing until, but not including
93.Ar stop .
94The
95.Ar start
96value must be at least 0 and not greater than
97.Ar stop .
98The
99.Ar stop
100value must not be greater than the maximum.
101The default and maximum value of
102.Ar stop
92is 3825123056546413050.
103is 18446744073709551615.
93.Pp
94When the
95.Nm primes
96utility is invoked with no arguments,
97.Ar start
98is read from standard input and
99.Ar stop
100is taken to be the maximum.

--- 21 unchanged lines hidden --- 		104.Pp
105When the
106.Nm primes
107utility is invoked with no arguments,
108.Ar start
109is read from standard input and
110.Ar stop
111is taken to be the maximum.

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