Q: What are the prime factors of the number 251,525,125?

 A: 5, 23, 89, 983

Why are those the prime factors of the number 251,525,125?

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 251,525,125

251,525,125
Factor Arrows
550,305,025
Factor Arrows
510,061,005
Factor Arrows
52,012,201
Factor Arrows
2387,487
Factor Arrows
89983

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:

5, 23, 89, 983

We can check our work by multiplying all of the prime factors together: 5 x 5 x 5 x 23 x 89 x 983 = 251,525,125

This can also be written as 53 x 231 x 891 x 9831 = 251,525,125

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


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