4 factor, primes \- factor a number, generate large primes
20 and its prime factors,
21 each repeated the proper number of times.
22 The number must be positive and less than
27 .if t 1.8\(mu10\u\s716\s0\d\|).
33 reads a stream of numbers from the standard input and factors them.
34 It exits on any input not a positive integer.
35 Maximum running time is proportional to
37 .if t .I \(sr\o'n\(rn'\f1.
41 prints the prime numbers ranging from
49 are positive numbers less than
59 is missing, it reads the starting number from the
62 .B /sys/src/cmd/factor.c
64 .B /sys/src/cmd/primes.c