Q: What are the prime factors of the number 401,332,260?

 A: 2, 3, 5, 7, 17, 56209

Why are those the prime factors of the number 401,332,260?

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 401,332,260

401,332,260
Factor Arrows
2200,666,130
Factor Arrows
2100,333,065
Factor Arrows
333,444,355
Factor Arrows
56,688,871
Factor Arrows
7955,553
Factor Arrows
1756,209

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, 5, 7, 17, 56209

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 5 x 7 x 17 x 56,209 = 401,332,260

This can also be written as 22 x 31 x 51 x 71 x 171 x 56,2091 = 401,332,260

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


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