Q: What are the prime factors of the number 133,315,312?

 A: 2, 13, 47, 1049

Why are those the prime factors of the number 133,315,312?

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 133,315,312

133,315,312
Factor Arrows
266,657,656
Factor Arrows
233,328,828
Factor Arrows
216,664,414
Factor Arrows
28,332,207
Factor Arrows
13640,939
Factor Arrows
1349,303
Factor Arrows
471,049

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, 13, 47, 1049

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 13 x 13 x 47 x 1,049 = 133,315,312

This can also be written as 24 x 132 x 471 x 1,0491 = 133,315,312

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


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