Q: What are the prime factors of the number 912,408?

 A: 2, 3, 7, 5431

Why are those the prime factors of the number 912,408?

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 912,408

912,408
Factor Arrows
2456,204
Factor Arrows
2228,102
Factor Arrows
2114,051
Factor Arrows
338,017
Factor Arrows
75,431

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, 7, 5431

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 7 x 5,431 = 912,408

This can also be written as 23 x 31 x 71 x 5,4311 = 912,408

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


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