Q: What are the prime factors of the number 115,124,345?

 A: 5, 7, 29, 101, 1123

Why are those the prime factors of the number 115,124,345?

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 115,124,345

115,124,345
Factor Arrows
523,024,869
Factor Arrows
73,289,267
Factor Arrows
29113,423
Factor Arrows
1011,123

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, 29, 101, 1123

We can check our work by multiplying all of the prime factors together: 5 x 7 x 29 x 101 x 1,123 = 115,124,345

This can also be written as 51 x 71 x 291 x 1011 x 1,1231 = 115,124,345

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


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