Q: What are the prime factors of the number 401,500,624?

 A: 2, 7, 1471, 2437

Why are those the prime factors of the number 401,500,624?

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 401,500,624

401,500,624
Factor Arrows
2200,750,312
Factor Arrows
2100,375,156
Factor Arrows
250,187,578
Factor Arrows
225,093,789
Factor Arrows
73,584,827
Factor Arrows
1,4712,437

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, 1471, 2437

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 7 x 1,471 x 2,437 = 401,500,624

This can also be written as 24 x 71 x 1,4711 x 2,4371 = 401,500,624

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


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