Q: What are the prime factors of the number 103,321,416?

 A: 2, 3, 11, 47, 757

Why are those the prime factors of the number 103,321,416?

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 103,321,416

103,321,416
Factor Arrows
251,660,708
Factor Arrows
225,830,354
Factor Arrows
212,915,177
Factor Arrows
34,305,059
Factor Arrows
11391,369
Factor Arrows
1135,579
Factor Arrows
47757

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, 11, 47, 757

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 11 x 11 x 47 x 757 = 103,321,416

This can also be written as 23 x 31 x 112 x 471 x 7571 = 103,321,416

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


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