Q: What are the prime factors of the number 78,716,160?

 A: 2, 3, 5, 6833

Why are those the prime factors of the number 78,716,160?

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 78,716,160

78,716,160
Factor Arrows
239,358,080
Factor Arrows
219,679,040
Factor Arrows
29,839,520
Factor Arrows
24,919,760
Factor Arrows
22,459,880
Factor Arrows
21,229,940
Factor Arrows
2614,970
Factor Arrows
2307,485
Factor Arrows
3102,495
Factor Arrows
334,165
Factor Arrows
56,833

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, 5, 6833

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 2 x 3 x 3 x 5 x 6,833 = 78,716,160

This can also be written as 28 x 32 x 51 x 6,8331 = 78,716,160

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


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