Q: What are the prime factors of the number 78,558,304?

 A: 2, 11, 67, 3331

Why are those the prime factors of the number 78,558,304?

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 78,558,304

78,558,304
Factor Arrows
239,279,152
Factor Arrows
219,639,576
Factor Arrows
29,819,788
Factor Arrows
24,909,894
Factor Arrows
22,454,947
Factor Arrows
11223,177
Factor Arrows
673,331

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, 11, 67, 3331

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 11 x 67 x 3,331 = 78,558,304

This can also be written as 25 x 111 x 671 x 3,3311 = 78,558,304

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


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