Q: What are the prime factors of the number 136,031,472?

 A: 2, 3, 31, 983

Why are those the prime factors of the number 136,031,472?

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 136,031,472

136,031,472
Factor Arrows
268,015,736
Factor Arrows
234,007,868
Factor Arrows
217,003,934
Factor Arrows
28,501,967
Factor Arrows
32,833,989
Factor Arrows
3944,663
Factor Arrows
3130,473
Factor Arrows
31983

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, 31, 983

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 31 x 31 x 983 = 136,031,472

This can also be written as 24 x 32 x 312 x 9831 = 136,031,472

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


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