Q: What are the prime factors of the number 425,116,608?

 A: 2, 3, 7, 67, 4721

Why are those the prime factors of the number 425,116,608?

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 425,116,608

425,116,608
Factor Arrows
2212,558,304
Factor Arrows
2106,279,152
Factor Arrows
253,139,576
Factor Arrows
226,569,788
Factor Arrows
213,284,894
Factor Arrows
26,642,447
Factor Arrows
32,214,149
Factor Arrows
7316,307
Factor Arrows
674,721

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, 67, 4721

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 67 x 4,721 = 425,116,608

This can also be written as 26 x 31 x 71 x 671 x 4,7211 = 425,116,608

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


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