Q: What are the prime factors of the number 78,681,088?

 A: 2, 76837

Why are those the prime factors of the number 78,681,088?

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 78,681,088

78,681,088
Factor Arrows
239,340,544
Factor Arrows
219,670,272
Factor Arrows
29,835,136
Factor Arrows
24,917,568
Factor Arrows
22,458,784
Factor Arrows
21,229,392
Factor Arrows
2614,696
Factor Arrows
2307,348
Factor Arrows
2153,674
Factor Arrows
276,837

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, 76837

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 2 x 2 x 76,837 = 78,681,088

This can also be written as 210 x 76,8371 = 78,681,088

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


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