Q: What are the prime factors of the number 423,416,646?

 A: 2, 3, 29, 90127

Why are those the prime factors of the number 423,416,646?

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 423,416,646

423,416,646
Factor Arrows
2211,708,323
Factor Arrows
370,569,441
Factor Arrows
323,523,147
Factor Arrows
37,841,049
Factor Arrows
32,613,683
Factor Arrows
2990,127

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, 90127

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 3 x 29 x 90,127 = 423,416,646

This can also be written as 21 x 34 x 291 x 90,1271 = 423,416,646

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


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