Q: What are the prime factors of the number 31,352,760?

 A: 2, 3, 5, 17, 47, 109

Why are those the prime factors of the number 31,352,760?

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 31,352,760

31,352,760
Factor Arrows
215,676,380
Factor Arrows
27,838,190
Factor Arrows
23,919,095
Factor Arrows
31,306,365
Factor Arrows
3435,455
Factor Arrows
587,091
Factor Arrows
175,123
Factor Arrows
47109

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, 17, 47, 109

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 5 x 17 x 47 x 109 = 31,352,760

This can also be written as 23 x 32 x 51 x 171 x 471 x 1091 = 31,352,760

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


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