Q: What are the prime factors of the number 313,248?

 A: 2, 3, 13, 251

Why are those the prime factors of the number 313,248?

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 313,248

313,248
Factor Arrows
2156,624
Factor Arrows
278,312
Factor Arrows
239,156
Factor Arrows
219,578
Factor Arrows
29,789
Factor Arrows
33,263
Factor Arrows
13251

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, 13, 251

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 13 x 251 = 313,248

This can also be written as 25 x 31 x 131 x 2511 = 313,248

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


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