FACTOR(6) Games Manual FACTOR(6)
factor, primes - factor a number, generate large primes
/usr/games/factor [ number ]
/usr/games/primes [ number ]
factor reads lines from its standard input. If it reads a positive
number, factor will factor the number and print its prime factors,
printing each one the proper number of times. factor exits when it
reads zero, a negative number, or something other than a number. If a
number is given, factor will factor the number, print its prime fac-
tors, and exit.
primes reads a number from the standard input and prints all primes
larger than the given number and smaller than 232 (about 4.3x109). If
a number is given, primes will use that number rather than reading one
from the standard input.
Ouch. Input out of range or for garbage input.
16 February 1988 FACTOR(6)