Q: What are the prime factors of the number 400,510,124?

 A: 2, 7, 47, 6211

Why are those the prime factors of the number 400,510,124?

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 400,510,124

400,510,124
Factor Arrows
2200,255,062
Factor Arrows
2100,127,531
Factor Arrows
714,303,933
Factor Arrows
72,043,419
Factor Arrows
7291,917
Factor Arrows
476,211

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, 7, 47, 6211

We can check our work by multiplying all of the prime factors together: 2 x 2 x 7 x 7 x 7 x 47 x 6,211 = 400,510,124

This can also be written as 22 x 73 x 471 x 6,2111 = 400,510,124

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


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