Q: What are the prime factors of the number 42,516,648?

 A: 2, 3, 271, 2179

Why are those the prime factors of the number 42,516,648?

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 42,516,648

42,516,648
Factor Arrows
221,258,324
Factor Arrows
210,629,162
Factor Arrows
25,314,581
Factor Arrows
31,771,527
Factor Arrows
3590,509
Factor Arrows
2712,179

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, 271, 2179

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 271 x 2,179 = 42,516,648

This can also be written as 23 x 32 x 2711 x 2,1791 = 42,516,648

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


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