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*AIX Version 4.3 System User's Guide: Operating System and Devices *

## Factoring a Number (factor Command)

You can factor numbers with the **factor** command. When called without specifying a value for the *Number *parameter, the **factor** command waits for you to enter a positive number less than `1E14`
(100,000,000,000,000). It then writes the prime factors of that number to standard output. It displays each factor the proper number of times. To exit, enter 0 (zero) or any non-numeric character.

When called with an argument, the **factor** command determines the prime factors of the *Number* parameter, writes the results to standard output, and exits.

For example, to calculate the prime factors of 123, enter:

factor 123

The following is displayed:

123
3
41

See the **factor** command in the *AIX Version 4.3 Commands Reference* for the exact syntax.

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