Q: What are the prime factors of the number 156,131,415?

 A: 3, 5, 11, 47, 2237

Why are those the prime factors of the number 156,131,415?

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 156,131,415

156,131,415
Factor Arrows
352,043,805
Factor Arrows
317,347,935
Factor Arrows
35,782,645
Factor Arrows
51,156,529
Factor Arrows
11105,139
Factor Arrows
472,237

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:

3, 5, 11, 47, 2237

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 5 x 11 x 47 x 2,237 = 156,131,415

This can also be written as 33 x 51 x 111 x 471 x 2,2371 = 156,131,415

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


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