Q: What are the prime factors of the number 331,208,704?

 A: 2, 43, 3761

Why are those the prime factors of the number 331,208,704?

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 331,208,704

331,208,704
Factor Arrows
2165,604,352
Factor Arrows
282,802,176
Factor Arrows
241,401,088
Factor Arrows
220,700,544
Factor Arrows
210,350,272
Factor Arrows
25,175,136
Factor Arrows
22,587,568
Factor Arrows
21,293,784
Factor Arrows
2646,892
Factor Arrows
2323,446
Factor Arrows
2161,723
Factor Arrows
433,761

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, 43, 3761

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 43 x 3,761 = 331,208,704

This can also be written as 211 x 431 x 3,7611 = 331,208,704

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


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