Q: What are the prime factors of the number 372,145,725?

 A: 3, 5, 7, 17, 41, 113

Why are those the prime factors of the number 372,145,725?

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 372,145,725

372,145,725
Factor Arrows
3124,048,575
Factor Arrows
341,349,525
Factor Arrows
313,783,175
Factor Arrows
52,756,635
Factor Arrows
5551,327
Factor Arrows
778,761
Factor Arrows
174,633
Factor Arrows
41113

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, 5, 7, 17, 41, 113

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 5 x 5 x 7 x 17 x 41 x 113 = 372,145,725

This can also be written as 33 x 52 x 71 x 171 x 411 x 1131 = 372,145,725

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


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