Q: What are the prime factors of the number 157,322,016?

 A: 2, 3, 167, 3271

Why are those the prime factors of the number 157,322,016?

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 157,322,016

157,322,016
Factor Arrows
278,661,008
Factor Arrows
239,330,504
Factor Arrows
219,665,252
Factor Arrows
29,832,626
Factor Arrows
24,916,313
Factor Arrows
31,638,771
Factor Arrows
3546,257
Factor Arrows
1673,271

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, 3, 167, 3271

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 3 x 167 x 3,271 = 157,322,016

This can also be written as 25 x 32 x 1671 x 3,2711 = 157,322,016

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


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