Q: What are the prime factors of the number 11,645,620?

 A: 2, 5, 7, 193, 431

Why are those the prime factors of the number 11,645,620?

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 11,645,620

11,645,620
Factor Arrows
25,822,810
Factor Arrows
22,911,405
Factor Arrows
5582,281
Factor Arrows
783,183
Factor Arrows
193431

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, 7, 193, 431

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 7 x 193 x 431 = 11,645,620

This can also be written as 22 x 51 x 71 x 1931 x 4311 = 11,645,620

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


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