factorutility will factor 64-bit positive integers. When a number is factored, it is printed, followed by a ‘:’, and the list of its prime factors in ascending order, on a single line. Every prime factor is printed as often as it divides the number. When
factoris invoked with one or more arguments, each argument will be factored. When
factoris invoked with no arguments,
factorreads numbers, one per line, from standard input, until end of file or error. White-space and empty lines are ignored. Numbers may be preceded by a single +. After a number is read, it is factored. Input lines must not be longer than 99 characters. The
primesutility 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 4294967295. The default value of stop is 4294967295. When the
primesutility is invoked with no arguments, start is read from standard input. stop is taken to be 4294967295. The start value may be preceded by a single +. The input line must not be longer than 99 characters.
factorcannot handle the “10 most wanted” factor list;
primeswon't get you a world record.
|December 30, 2015||OpenBSD-current|