Q: What are the prime factors of the number 251,423,304?

 A: 2, 3, 11, 23, 47, 881

Why are those the prime factors of the number 251,423,304?

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 251,423,304

251,423,304
Factor Arrows
2125,711,652
Factor Arrows
262,855,826
Factor Arrows
231,427,913
Factor Arrows
310,475,971
Factor Arrows
11952,361
Factor Arrows
2341,407
Factor Arrows
47881

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, 11, 23, 47, 881

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 11 x 23 x 47 x 881 = 251,423,304

This can also be written as 23 x 31 x 111 x 231 x 471 x 8811 = 251,423,304

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


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