Q: What are the prime factors of the number 331,651,502?

 A: 2, 7, 13, 37189

Why are those the prime factors of the number 331,651,502?

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 331,651,502

331,651,502
Factor Arrows
2165,825,751
Factor Arrows
723,689,393
Factor Arrows
73,384,199
Factor Arrows
7483,457
Factor Arrows
1337,189

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, 7, 13, 37189

We can check our work by multiplying all of the prime factors together: 2 x 7 x 7 x 7 x 13 x 37,189 = 331,651,502

This can also be written as 21 x 73 x 131 x 37,1891 = 331,651,502

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


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