Q: What are the prime factors of the number 308,068,736?

 A: 2, 19, 59, 113

Why are those the prime factors of the number 308,068,736?

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 308,068,736

308,068,736
Factor Arrows
2154,034,368
Factor Arrows
277,017,184
Factor Arrows
238,508,592
Factor Arrows
219,254,296
Factor Arrows
29,627,148
Factor Arrows
24,813,574
Factor Arrows
22,406,787
Factor Arrows
19126,673
Factor Arrows
196,667
Factor Arrows
59113

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, 59, 113

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 2 x 19 x 19 x 59 x 113 = 308,068,736

This can also be written as 27 x 192 x 591 x 1131 = 308,068,736

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


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