Q: What are the prime factors of the number 431,605,146?

 A: 2, 3, 7, 17, 83, 7283

Why are those the prime factors of the number 431,605,146?

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 431,605,146

431,605,146
Factor Arrows
2215,802,573
Factor Arrows
371,934,191
Factor Arrows
710,276,313
Factor Arrows
17604,489
Factor Arrows
837,283

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, 7, 17, 83, 7283

We can check our work by multiplying all of the prime factors together: 2 x 3 x 7 x 17 x 83 x 7,283 = 431,605,146

This can also be written as 21 x 31 x 71 x 171 x 831 x 7,2831 = 431,605,146

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


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