Q: What are the prime factors of the number 79,403,889?

 A: 3, 17, 23, 139, 487

Why are those the prime factors of the number 79,403,889?

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 79,403,889

79,403,889
Factor Arrows
326,467,963
Factor Arrows
171,556,939
Factor Arrows
2367,693
Factor Arrows
139487

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:

3, 17, 23, 139, 487

We can check our work by multiplying all of the prime factors together: 3 x 17 x 23 x 139 x 487 = 79,403,889

This can also be written as 31 x 171 x 231 x 1391 x 4871 = 79,403,889

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


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