Q: What are the prime factors of the number 74,232,445?

 A: 5, 7, 31, 2207

Why are those the prime factors of the number 74,232,445?

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 74,232,445

74,232,445
Factor Arrows
514,846,489
Factor Arrows
72,120,927
Factor Arrows
3168,417
Factor Arrows
312,207

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:

5, 7, 31, 2207

We can check our work by multiplying all of the prime factors together: 5 x 7 x 31 x 31 x 2,207 = 74,232,445

This can also be written as 51 x 71 x 312 x 2,2071 = 74,232,445

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


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