Q: What are the prime factors of the number 457,464,864?

 A: 2, 3, 61, 191, 409

Why are those the prime factors of the number 457,464,864?

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 457,464,864

457,464,864
Factor Arrows
2228,732,432
Factor Arrows
2114,366,216
Factor Arrows
257,183,108
Factor Arrows
228,591,554
Factor Arrows
214,295,777
Factor Arrows
34,765,259
Factor Arrows
6178,119
Factor Arrows
191409

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, 61, 191, 409

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 61 x 191 x 409 = 457,464,864

This can also be written as 25 x 31 x 611 x 1911 x 4091 = 457,464,864

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


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