Q: What are the prime factors of the number 172,465,712?

 A: 2, 73, 149, 991

Why are those the prime factors of the number 172,465,712?

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 172,465,712

172,465,712
Factor Arrows
286,232,856
Factor Arrows
243,116,428
Factor Arrows
221,558,214
Factor Arrows
210,779,107
Factor Arrows
73147,659
Factor Arrows
149991

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, 73, 149, 991

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 73 x 149 x 991 = 172,465,712

This can also be written as 24 x 731 x 1491 x 9911 = 172,465,712

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


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