Q: What are the prime factors of the number 78,871,104?

 A: 2, 3, 13, 3511

Why are those the prime factors of the number 78,871,104?

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 78,871,104

78,871,104
Factor Arrows
239,435,552
Factor Arrows
219,717,776
Factor Arrows
29,858,888
Factor Arrows
24,929,444
Factor Arrows
22,464,722
Factor Arrows
21,232,361
Factor Arrows
3410,787
Factor Arrows
3136,929
Factor Arrows
345,643
Factor Arrows
133,511

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, 13, 3511

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 3 x 3 x 3 x 13 x 3,511 = 78,871,104

This can also be written as 26 x 33 x 131 x 3,5111 = 78,871,104

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


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