Q: What are the prime factors of the number 231,313,408?

 A: 2, 56473

Why are those the prime factors of the number 231,313,408?

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 231,313,408

231,313,408
Factor Arrows
2115,656,704
Factor Arrows
257,828,352
Factor Arrows
228,914,176
Factor Arrows
214,457,088
Factor Arrows
27,228,544
Factor Arrows
23,614,272
Factor Arrows
21,807,136
Factor Arrows
2903,568
Factor Arrows
2451,784
Factor Arrows
2225,892
Factor Arrows
2112,946
Factor Arrows
256,473

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, 56473

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 2 x 56,473 = 231,313,408

This can also be written as 212 x 56,4731 = 231,313,408

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


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