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33 .\" @(#)factor.6 8.1 (Berkeley) 5/31/93
36 .\" By: Landon Curt Noll chongo@toad.com, ...!{sun,tolsoft}!hoptoad!chongo
38 .\" chongo <for a good prime call: 391581 * 2^216193 - 1> /\oo/\
52 utility will factor integers between \-2147483648 and 2147483647 inclusive.
53 When a number is factored, it is printed, followed by a
55 and the list of factors on a single line.
56 Factors are listed in ascending order, and are preceded by a space.
57 If a factor divides a value more than once, it will be printed more than once.
61 is invoked with one or more arguments, each argument will be factored.
65 is invoked with no arguments,
67 reads numbers, one per line, from standard input, until end of file or error.
68 Leading white-space and empty lines are ignored.
69 Numbers may be preceded by a single - or +.
70 Numbers are terminated by a non-digit character (such as a newline).
71 After a number is read, it is factored.
72 Input lines must not be longer than 255 characters.
74 Out of range or invalid input results in
75 an appropriate error message
76 being written to standard error.