Q: What are the prime factors of the number 37,115,120?

 A: 2, 5, 7, 191, 347

Why are those the prime factors of the number 37,115,120?

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 37,115,120

37,115,120
Factor Arrows
218,557,560
Factor Arrows
29,278,780
Factor Arrows
24,639,390
Factor Arrows
22,319,695
Factor Arrows
5463,939
Factor Arrows
766,277
Factor Arrows
191347

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, 5, 7, 191, 347

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 7 x 191 x 347 = 37,115,120

This can also be written as 24 x 51 x 71 x 1911 x 3471 = 37,115,120

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


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