Q: What are the prime factors of the number 31,324,866?

 A: 2, 3, 37, 149, 947

Why are those the prime factors of the number 31,324,866?

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 31,324,866

31,324,866
Factor Arrows
215,662,433
Factor Arrows
35,220,811
Factor Arrows
37141,103
Factor Arrows
149947

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, 37, 149, 947

We can check our work by multiplying all of the prime factors together: 2 x 3 x 37 x 149 x 947 = 31,324,866

This can also be written as 21 x 31 x 371 x 1491 x 9471 = 31,324,866

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


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