Q: What are the prime factors of the number 31,144,302?

 A: 2, 3, 7, 35311

Why are those the prime factors of the number 31,144,302?

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 31,144,302

31,144,302
Factor Arrows
215,572,151
Factor Arrows
35,190,717
Factor Arrows
31,730,239
Factor Arrows
7247,177
Factor Arrows
735,311

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, 7, 35311

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 7 x 7 x 35,311 = 31,144,302

This can also be written as 21 x 32 x 72 x 35,3111 = 31,144,302

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


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