Q: What are the prime factors of the number 425,205,312?

 A: 2, 3, 7, 316373

Why are those the prime factors of the number 425,205,312?

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 425,205,312

425,205,312
Factor Arrows
2212,602,656
Factor Arrows
2106,301,328
Factor Arrows
253,150,664
Factor Arrows
226,575,332
Factor Arrows
213,287,666
Factor Arrows
26,643,833
Factor Arrows
32,214,611
Factor Arrows
7316,373

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, 7, 316373

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 3 x 7 x 316,373 = 425,205,312

This can also be written as 26 x 31 x 71 x 316,3731 = 425,205,312

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


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