Q: What are the prime factors of the number 281,751,312?

 A: 2, 3, 31, 189349

Why are those the prime factors of the number 281,751,312?

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 281,751,312

281,751,312
Factor Arrows
2140,875,656
Factor Arrows
270,437,828
Factor Arrows
235,218,914
Factor Arrows
217,609,457
Factor Arrows
35,869,819
Factor Arrows
31189,349

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, 31, 189349

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 31 x 189,349 = 281,751,312

This can also be written as 24 x 31 x 311 x 189,3491 = 281,751,312

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


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