Q: What are the prime factors of the number 70,750,656?

 A: 2, 3, 113, 1087

Why are those the prime factors of the number 70,750,656?

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 70,750,656

70,750,656
Factor Arrows
235,375,328
Factor Arrows
217,687,664
Factor Arrows
28,843,832
Factor Arrows
24,421,916
Factor Arrows
22,210,958
Factor Arrows
21,105,479
Factor Arrows
3368,493
Factor Arrows
3122,831
Factor Arrows
1131,087

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, 113, 1087

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 3 x 113 x 1,087 = 70,750,656

This can also be written as 26 x 32 x 1131 x 1,0871 = 70,750,656

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


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