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FACTOR(6)		     FreeBSD Games Manual		     FACTOR(6)

     factor, primes -- factor a	number,	generate primes

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

     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
     single 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

     When factor is invoked with no arguments, factor reads numbers, one per
     line, from	standard input until end of file or 0 is entered or an error
     occurs.  Leading white-space and empty lines are ignored.

     Numbers may be preceded by	a single `+'.  Numbers can be either decimal
     or	hexadecimal strings where the longest leading substring	is used.  Num-
     bers are terminated by a non-digit	character (such	as a newline).	If the
     string contains only decimal digits, it is	treated	as a decimal represen-
     tation for	a number.  A hexadecimal string	can contain an optional	0x or
     0X	prefix.	 After a number	is read, it is factored.

     The primes	utility	prints primes in ascending order, one per line,	start-
     ing 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 18446744073709551615.

     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).

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

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

FreeBSD	13.0		       January 12, 2020			  FreeBSD 13.0


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