Q: What are the prime factors of the number 26,398,515?

 A: 3, 5, 11, 13, 31, 397

Why are those the prime factors of the number 26,398,515?

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 26,398,515

26,398,515
Factor Arrows
38,799,505
Factor Arrows
51,759,901
Factor Arrows
11159,991
Factor Arrows
1312,307
Factor Arrows
31397

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, 5, 11, 13, 31, 397

We can check our work by multiplying all of the prime factors together: 3 x 5 x 11 x 13 x 31 x 397 = 26,398,515

This can also be written as 31 x 51 x 111 x 131 x 311 x 3971 = 26,398,515

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


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