Q: What are the prime factors of the number 37,138,946?

 A: 2, 13, 661, 2161

Why are those the prime factors of the number 37,138,946?

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 37,138,946

37,138,946
Factor Arrows
218,569,473
Factor Arrows
131,428,421
Factor Arrows
6612,161

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, 13, 661, 2161

We can check our work by multiplying all of the prime factors together: 2 x 13 x 661 x 2,161 = 37,138,946

This can also be written as 21 x 131 x 6611 x 2,1611 = 37,138,946

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


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