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OpenSolaris 2009.06 - man page for factor (opensolaris section 1)

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factor(1)				  User Commands 				factor(1)

       factor - obtain the prime factors of a number

       factor [integer]

       factor  writes  to  standard input all prime factors for any positive integer less than or
       equal to 10^14. The prime factors are written the proper number of times.

       If factor is used without an argument, it waits for an integer to be entered. After  entry
       of  the	integer,  it factors it, writes its prime factors the proper number of times, and
       then waits for another integer. factor exits if	a  0  or  any  non-numeric  character  is

       If  factor  is  invoked	with an argument (integer), it writes the integer, factors it and
       writes all the prime factors as described above, and then exits. If the argument is  0  or
       non-numeric, factor writes a 0 and then exits.

       The  maximum  time to factor an integer is proportional to sqrt(n), where n is the integer
       which is entered. factor will take this time when n is prime or the square of a prime.

       integer	  Any positive integer less than or equal to 10^14.

       0    Successful completion.

       1    An error occurred.

       factor prints the error message Ouch! for input out of range or for garbage input.

       See attributes(5) for descriptions of the following attributes:

       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       |Availability		     |SUNWesu			   |


SunOS 5.11				   31 Jan 1996					factor(1)
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