Q: What are the prime factors of the number 115,401,408?

 A: 2, 3, 619, 971

Why are those the prime factors of the number 115,401,408?

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 115,401,408

115,401,408
Factor Arrows
257,700,704
Factor Arrows
228,850,352
Factor Arrows
214,425,176
Factor Arrows
27,212,588
Factor Arrows
23,606,294
Factor Arrows
21,803,147
Factor Arrows
3601,049
Factor Arrows
619971

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, 619, 971

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 619 x 971 = 115,401,408

This can also be written as 26 x 31 x 6191 x 9711 = 115,401,408

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


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