Q: What are the prime factors of the number 85,507,340?

 A: 2, 5, 167, 25601

Why are those the prime factors of the number 85,507,340?

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 85,507,340

85,507,340
Factor Arrows
242,753,670
Factor Arrows
221,376,835
Factor Arrows
54,275,367
Factor Arrows
16725,601

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, 167, 25601

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 167 x 25,601 = 85,507,340

This can also be written as 22 x 51 x 1671 x 25,6011 = 85,507,340

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


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