Q: What are the prime factors of the number 18,630,656?

 A: 2, 11, 827

Why are those the prime factors of the number 18,630,656?

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 18,630,656

18,630,656
Factor Arrows
29,315,328
Factor Arrows
24,657,664
Factor Arrows
22,328,832
Factor Arrows
21,164,416
Factor Arrows
2582,208
Factor Arrows
2291,104
Factor Arrows
2145,552
Factor Arrows
272,776
Factor Arrows
236,388
Factor Arrows
218,194
Factor Arrows
29,097
Factor Arrows
11827

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, 11, 827

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 11 x 827 = 18,630,656

This can also be written as 211 x 111 x 8271 = 18,630,656

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


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