Q: What are the prime factors of the number 78,425,976?

 A: 2, 3, 29, 281, 401

Why are those the prime factors of the number 78,425,976?

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 78,425,976

78,425,976
Factor Arrows
239,212,988
Factor Arrows
219,606,494
Factor Arrows
29,803,247
Factor Arrows
33,267,749
Factor Arrows
29112,681
Factor Arrows
281401

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, 29, 281, 401

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 29 x 281 x 401 = 78,425,976

This can also be written as 23 x 31 x 291 x 2811 x 4011 = 78,425,976

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


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