Q: What are the prime factors of the number 31,228,461?

 A: 3, 11, 151, 2089

Why are those the prime factors of the number 31,228,461?

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 31,228,461

31,228,461
Factor Arrows
310,409,487
Factor Arrows
33,469,829
Factor Arrows
11315,439
Factor Arrows
1512,089

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:

3, 11, 151, 2089

We can check our work by multiplying all of the prime factors together: 3 x 3 x 11 x 151 x 2,089 = 31,228,461

This can also be written as 32 x 111 x 1511 x 2,0891 = 31,228,461

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


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