Q: What are the prime factors of the number 251,140?

 A: 2, 5, 29, 433

Why are those the prime factors of the number 251,140?

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 251,140

251,140
Factor Arrows
2125,570
Factor Arrows
262,785
Factor Arrows
512,557
Factor Arrows
29433

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, 29, 433

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 29 x 433 = 251,140

This can also be written as 22 x 51 x 291 x 4331 = 251,140

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


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