Q: What are the prime factors of the number 255,244,136?

 A: 2, 7, 167, 557

Why are those the prime factors of the number 255,244,136?

Prime factors are the prime numbers that can be multipled together to equal the original number. You find the factors by dividing by prime numbers. It is best shown by creating a Factor Tree.

Factor Tree for the number 255,244,136

255,244,136
Factor Arrows
2127,622,068
Factor Arrows
263,811,034
Factor Arrows
231,905,517
Factor Arrows
74,557,931
Factor Arrows
7651,133
Factor Arrows
793,019
Factor Arrows
167557

The numbers in bold above are the prime factors. If there are multiples, you only count them one time. This leads us to our prime factors of:

2, 7, 167, 557

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 7 x 7 x 7 x 167 x 557 = 255,244,136

This can also be written as 23 x 73 x 1671 x 5571 = 255,244,136

If you would like to know more, or need additional explanation, please review our prime factorization explanation.


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