Q: What are the prime factors of the number 486,640,378?

 A: 2, 7, 59, 127, 4639

Why are those the prime factors of the number 486,640,378?

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 486,640,378

486,640,378
Factor Arrows
2243,320,189
Factor Arrows
734,760,027
Factor Arrows
59589,153
Factor Arrows
1274,639

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, 7, 59, 127, 4639

We can check our work by multiplying all of the prime factors together: 2 x 7 x 59 x 127 x 4,639 = 486,640,378

This can also be written as 21 x 71 x 591 x 1271 x 4,6391 = 486,640,378

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


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