Q: What are the prime factors of the number 674,121,366?

 A: 2, 3, 17, 139, 587

Why are those the prime factors of the number 674,121,366?

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 674,121,366

674,121,366
Factor Arrows
2337,060,683
Factor Arrows
3112,353,561
Factor Arrows
337,451,187
Factor Arrows
312,483,729
Factor Arrows
34,161,243
Factor Arrows
31,387,081
Factor Arrows
1781,593
Factor Arrows
139587

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, 17, 139, 587

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 3 x 3 x 17 x 139 x 587 = 674,121,366

This can also be written as 21 x 35 x 171 x 1391 x 5871 = 674,121,366

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


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