Q: What are the prime factors of the number 322,103,210?

 A: 2, 5, 11, 13, 20477

Why are those the prime factors of the number 322,103,210?

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 322,103,210

322,103,210
Factor Arrows
2161,051,605
Factor Arrows
532,210,321
Factor Arrows
112,928,211
Factor Arrows
11266,201
Factor Arrows
1320,477

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, 5, 11, 13, 20477

We can check our work by multiplying all of the prime factors together: 2 x 5 x 11 x 11 x 13 x 20,477 = 322,103,210

This can also be written as 21 x 51 x 112 x 131 x 20,4771 = 322,103,210

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


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