Q: What are the prime factors of the number 401,467,770?

 A: 2, 3, 5, 11, 599, 677

Why are those the prime factors of the number 401,467,770?

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 401,467,770

401,467,770
Factor Arrows
2200,733,885
Factor Arrows
366,911,295
Factor Arrows
322,303,765
Factor Arrows
54,460,753
Factor Arrows
11405,523
Factor Arrows
599677

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, 11, 599, 677

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 5 x 11 x 599 x 677 = 401,467,770

This can also be written as 21 x 32 x 51 x 111 x 5991 x 6771 = 401,467,770

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


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