Q: What are the prime factors of the number 85,246,428?

 A: 2, 3, 29, 487, 503

Why are those the prime factors of the number 85,246,428?

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 85,246,428

85,246,428
Factor Arrows
242,623,214
Factor Arrows
221,311,607
Factor Arrows
37,103,869
Factor Arrows
29244,961
Factor Arrows
487503

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, 3, 29, 487, 503

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 29 x 487 x 503 = 85,246,428

This can also be written as 22 x 31 x 291 x 4871 x 5031 = 85,246,428

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


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