Q: What are the prime factors of the number 400,454,610?

 A: 2, 3, 5, 23, 89, 6521

Why are those the prime factors of the number 400,454,610?

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 400,454,610

400,454,610
Factor Arrows
2200,227,305
Factor Arrows
366,742,435
Factor Arrows
513,348,487
Factor Arrows
23580,369
Factor Arrows
896,521

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, 23, 89, 6521

We can check our work by multiplying all of the prime factors together: 2 x 3 x 5 x 23 x 89 x 6,521 = 400,454,610

This can also be written as 21 x 31 x 51 x 231 x 891 x 6,5211 = 400,454,610

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


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