Q: What are the prime factors of the number 251,133,320?

 A: 2, 5, 23, 272971

Why are those the prime factors of the number 251,133,320?

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 251,133,320

251,133,320
Factor Arrows
2125,566,660
Factor Arrows
262,783,330
Factor Arrows
231,391,665
Factor Arrows
56,278,333
Factor Arrows
23272,971

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, 5, 23, 272971

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 23 x 272,971 = 251,133,320

This can also be written as 23 x 51 x 231 x 272,9711 = 251,133,320

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


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