Q: What are the prime factors of the number 78,344,316?

 A: 2, 3, 31, 70201

Why are those the prime factors of the number 78,344,316?

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 78,344,316

78,344,316
Factor Arrows
239,172,158
Factor Arrows
219,586,079
Factor Arrows
36,528,693
Factor Arrows
32,176,231
Factor Arrows
3170,201

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, 31, 70201

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 31 x 70,201 = 78,344,316

This can also be written as 22 x 32 x 311 x 70,2011 = 78,344,316

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


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