Q: What are the prime factors of the number 251,421,452?

 A: 2, 19, 839, 3943

Why are those the prime factors of the number 251,421,452?

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 251,421,452

251,421,452
Factor Arrows
2125,710,726
Factor Arrows
262,855,363
Factor Arrows
193,308,177
Factor Arrows
8393,943

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, 19, 839, 3943

We can check our work by multiplying all of the prime factors together: 2 x 2 x 19 x 839 x 3,943 = 251,421,452

This can also be written as 22 x 191 x 8391 x 3,9431 = 251,421,452

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


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