Q: What are the prime factors of the number 42,662,634?

 A: 2, 3, 7, 31, 151

Why are those the prime factors of the number 42,662,634?

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 42,662,634

42,662,634
Factor Arrows
221,331,317
Factor Arrows
37,110,439
Factor Arrows
71,015,777
Factor Arrows
7145,111
Factor Arrows
314,681
Factor Arrows
31151

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, 31, 151

We can check our work by multiplying all of the prime factors together: 2 x 3 x 7 x 7 x 31 x 31 x 151 = 42,662,634

This can also be written as 21 x 31 x 72 x 312 x 1511 = 42,662,634

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


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