Q: What are the prime factors of the number 15,322,671?

 A: 3, 7, 13, 53, 353

Why are those the prime factors of the number 15,322,671?

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 15,322,671

15,322,671
Factor Arrows
35,107,557
Factor Arrows
31,702,519
Factor Arrows
7243,217
Factor Arrows
1318,709
Factor Arrows
53353

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, 7, 13, 53, 353

We can check our work by multiplying all of the prime factors together: 3 x 3 x 7 x 13 x 53 x 353 = 15,322,671

This can also be written as 32 x 71 x 131 x 531 x 3531 = 15,322,671

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


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