.TH FACTOR 1 .SH NAMEfactor, primes \- factor a number, generate large primes.SH SYNOPSIS.B factor[ number ].PP.B primes.SH DESCRIPTIONWhen.I factoris invoked without an argument, it waits for a number to be typed in.If you type in a positivenumber less than 2\u\s756\s0\d (about.if n 7.2e16).if t 7.2\(mu10\u\s716\s0\d\|)it will factor the number and print its prime factors; each one is printedthe proper number of times.Then it waits for another number.It exits if it encounters a zero or any non-numeric character..PPIf.I factoris invoked with an argument, it factors the numberas above and then exits..PPMaximum time to factor is proportional to.if n sqrt(n).if t \(sr\o'\fIn\fR\(rn'and occurs when.I nis primeor the square of a prime.It takes 1 minute to factor a primenear10\u\s714\s0\don a PDP11..PPWhen.I primesis invoked, it waits for a number to be typed in.If you type in a positivenumber less than 2\u\s756\s0\dit will print all primes greater than orequal to this number..SH DIAGNOSTICS`Ouch.' for input out of range or for garbage input.