Q: What are the prime factors of the number 36,637,920?

 A: 2, 3, 5, 11, 257

Why are those the prime factors of the number 36,637,920?

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 36,637,920

36,637,920
Factor Arrows
218,318,960
Factor Arrows
29,159,480
Factor Arrows
24,579,740
Factor Arrows
22,289,870
Factor Arrows
21,144,935
Factor Arrows
3381,645
Factor Arrows
3127,215
Factor Arrows
342,405
Factor Arrows
314,135
Factor Arrows
52,827
Factor Arrows
11257

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, 5, 11, 257

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 3 x 3 x 3 x 5 x 11 x 257 = 36,637,920

This can also be written as 25 x 34 x 51 x 111 x 2571 = 36,637,920

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


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