Q: What are the prime factors of the number 310,431,312?

 A: 2, 3, 29, 71, 349

Why are those the prime factors of the number 310,431,312?

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 310,431,312

310,431,312
Factor Arrows
2155,215,656
Factor Arrows
277,607,828
Factor Arrows
238,803,914
Factor Arrows
219,401,957
Factor Arrows
36,467,319
Factor Arrows
32,155,773
Factor Arrows
3718,591
Factor Arrows
2924,779
Factor Arrows
71349

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, 29, 71, 349

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 3 x 3 x 29 x 71 x 349 = 310,431,312

This can also be written as 24 x 33 x 291 x 711 x 3491 = 310,431,312

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


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