Q: What are the prime factors of the number 715,500,156?

 A: 2, 3, 7, 73, 79, 211

Why are those the prime factors of the number 715,500,156?

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 715,500,156

715,500,156
Factor Arrows
2357,750,078
Factor Arrows
2178,875,039
Factor Arrows
359,625,013
Factor Arrows
78,517,859
Factor Arrows
71,216,837
Factor Arrows
7316,669
Factor Arrows
79211

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, 73, 79, 211

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 7 x 7 x 73 x 79 x 211 = 715,500,156

This can also be written as 22 x 31 x 72 x 731 x 791 x 2111 = 715,500,156

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


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