Q: What are the prime factors of the number 3,677,520?

 A: 2, 3, 5, 7, 11, 199

Why are those the prime factors of the number 3,677,520?

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 3,677,520

3,677,520
Factor Arrows
21,838,760
Factor Arrows
2919,380
Factor Arrows
2459,690
Factor Arrows
2229,845
Factor Arrows
376,615
Factor Arrows
515,323
Factor Arrows
72,189
Factor Arrows
11199

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, 5, 7, 11, 199

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 5 x 7 x 11 x 199 = 3,677,520

This can also be written as 24 x 31 x 51 x 71 x 111 x 1991 = 3,677,520

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


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