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NAME

       factor, primes - factor a number, generate large primes

SYNOPSIS

       factor [ number ]

       primes [ start [ finish ] ]

DESCRIPTION

       Factor prints number and its prime factors, each repeated the proper number of times.  The
       number must be positive and less than 2**54 (about 1.8e16)

       If no number is given, factor reads a stream  of  numbers  from  the  standard  input  and
       factors  them.   It  exits  on  any input not a positive integer.  Maximum running time is
       proportional to sqrt(n).

       Primes prints the prime numbers ranging from start to finish, where start and  finish  are
       positive  numbers  less  than  2**56.  If finish is missing, primes prints without end; if
       start is missing, it reads the starting number from the standard input.

SOURCE

       /src/cmd/factor.c
       /src/cmd/primes.c

                                                                                        FACTOR(1)