Q: What are the prime factors of the number 400,464,831?

 A: 3, 13, 167, 61487

Why are those the prime factors of the number 400,464,831?

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 400,464,831

400,464,831
Factor Arrows
3133,488,277
Factor Arrows
1310,268,329
Factor Arrows
16761,487

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:

3, 13, 167, 61487

We can check our work by multiplying all of the prime factors together: 3 x 13 x 167 x 61,487 = 400,464,831

This can also be written as 31 x 131 x 1671 x 61,4871 = 400,464,831

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


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