Q: What are the prime factors of the number 231,451,312?

 A: 2, 19, 47, 97, 167

Why are those the prime factors of the number 231,451,312?

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 231,451,312

231,451,312
Factor Arrows
2115,725,656
Factor Arrows
257,862,828
Factor Arrows
228,931,414
Factor Arrows
214,465,707
Factor Arrows
19761,353
Factor Arrows
4716,199
Factor Arrows
97167

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, 19, 47, 97, 167

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 19 x 47 x 97 x 167 = 231,451,312

This can also be written as 24 x 191 x 471 x 971 x 1671 = 231,451,312

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


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