Q: What are the prime factors of the number 625,744?

 A: 2, 7, 37, 151

Why are those the prime factors of the number 625,744?

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 625,744

625,744
Factor Arrows
2312,872
Factor Arrows
2156,436
Factor Arrows
278,218
Factor Arrows
239,109
Factor Arrows
75,587
Factor Arrows
37151

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, 37, 151

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 7 x 37 x 151 = 625,744

This can also be written as 24 x 71 x 371 x 1511 = 625,744

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


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