tfactor.1 - plan9port - [fork] Plan 9 from user space
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       tfactor.1 (1017B)
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            1 .TH FACTOR 1 
            2 .CT 1 numbers
            3 .SH NAME
            4 factor, primes \- factor a number, generate large primes
            5 .SH SYNOPSIS
            6 .B factor
            7 [
            8 .I number
            9 ]
           10 .PP
           11 .B primes
           12 [
           13 .I start
           14 [
           15 .I finish
           16 ]
           17 ]
           18 .SH DESCRIPTION
           19 .I Factor
           20 prints
           21 .I number
           22 and its prime factors,
           23 each repeated the proper number of times.
           24 The number must be positive and less than
           25 .if n 2**54
           26 .if t 2\u\s754\s0\d
           27 (about
           28 .if n 1.8e16)
           29 .if t 1.8\(mu10\u\s716\s0\d\|).
           30 .PP
           31 If no
           32 .I number 
           33 is given,
           34 .I factor
           35 reads a stream of numbers from the standard input and factors them.
           36 It exits on any input not a positive integer.
           37 Maximum running time is proportional to
           38 .if n sqrt(n).
           39 .if t .I \(sr\o'n\(rn'\f1.
           40 .PP
           41 .PP
           42 .I Primes
           43 prints the prime numbers ranging from
           44 .I start
           45 to
           46 .IR finish ,
           47 where
           48 .I start
           49 and
           50 .I finish
           51 are positive numbers less than 
           52 .if n 2**56.
           53 .if t 2\u\s756\s0\d.
           54 If 
           55 .I finish
           56 is missing,
           57 .I primes
           58 prints without end;
           59 if
           60 .I start
           61 is missing, it reads the starting number from the
           62 standard input.
           63 .SH SOURCE
           64 .B \*9/src/cmd/factor.c
           65 .br
           66 .B \*9/src/cmd/primes.c