Q: What are the prime factors of the number 313,152?

 A: 2, 3, 7, 233

Why are those the prime factors of the number 313,152?

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 313,152

313,152
Factor Arrows
2156,576
Factor Arrows
278,288
Factor Arrows
239,144
Factor Arrows
219,572
Factor Arrows
29,786
Factor Arrows
24,893
Factor Arrows
31,631
Factor Arrows
7233

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, 7, 233

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 3 x 7 x 233 = 313,152

This can also be written as 26 x 31 x 71 x 2331 = 313,152

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


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