home | help
FACTOR(6)			   Games Manual 		       FACTOR(6)

NAME
     factor, primes -- factor a number, generate primes

SYNOPSIS
     factor [-h] [number ...]
     primes [-h] [start [stop]]

DESCRIPTION
     The  factor  utility  will factor positive integers.  When a number is fac-
     tored, it is printed, followed by a `:', and the list of factors on a  sin-
     gle  line.   Factors  are	listed in ascending order, and are preceded by a
     space.  If a factor divides a value more than once, it will be printed more
     than once.

     When factor is invoked with one or more arguments, each  argument	will  be
     factored.

     When  factor  is  invoked	with no arguments, factor reads numbers, one per
     line, from standard input, until end of file or error.  Leading white-space
     and empty lines are ignored.  Numbers may be  preceded  by  a  single  `+'.
     Numbers are terminated by a non-digit character (such as a newline).  After
     a number is read, it is factored.

     The primes utility prints primes in ascending order, one per line, starting
     at  or above start and continuing until, but not including stop.  The start
     value must be at least 0 and not greater than stop.  The  stop  value  must
     not  be greater than the maximum.	The default and maximum value of stop is
     3825123056546413050.

     When the primes utility is invoked with no arguments, start  is  read  from
     standard input and stop is taken to be the maximum.  The start value may be
     preceded  by  a  single  `+'.  The start value is terminated by a non-digit
     character (such as a newline).

DIAGNOSTICS
     negative numbers aren't permitted
     illegal numeric format
     start value must be less than stop value
     Result too large

BUGS
     factor cannot handle the "10 most wanted" factor list, primes will not  get
     you a world record.

FreeBSD 11.1			October 10, 2002		       FACTOR(6)

home | help