Q: What are the prime factors of the number 152,781,580?

 A: 2, 5, 7, 41, 43, 619

Why are those the prime factors of the number 152,781,580?

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 152,781,580

152,781,580
Factor Arrows
276,390,790
Factor Arrows
238,195,395
Factor Arrows
57,639,079
Factor Arrows
71,091,297
Factor Arrows
4126,617
Factor Arrows
43619

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, 5, 7, 41, 43, 619

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 7 x 41 x 43 x 619 = 152,781,580

This can also be written as 22 x 51 x 71 x 411 x 431 x 6191 = 152,781,580

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


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