Q: What are the prime factors of the number 251,143,248?

 A: 2, 3, 29, 180419

Why are those the prime factors of the number 251,143,248?

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 251,143,248

251,143,248
Factor Arrows
2125,571,624
Factor Arrows
262,785,812
Factor Arrows
231,392,906
Factor Arrows
215,696,453
Factor Arrows
35,232,151
Factor Arrows
29180,419

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, 29, 180419

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 29 x 180,419 = 251,143,248

This can also be written as 24 x 31 x 291 x 180,4191 = 251,143,248

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


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