Q: What are the prime factors of the number 1,301,520?

 A: 2, 3, 5, 11, 17, 29

Why are those the prime factors of the number 1,301,520?

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 1,301,520

1,301,520
Factor Arrows
2650,760
Factor Arrows
2325,380
Factor Arrows
2162,690
Factor Arrows
281,345
Factor Arrows
327,115
Factor Arrows
55,423
Factor Arrows
11493
Factor Arrows
1729

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, 11, 17, 29

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 11 x 17 x 29 = 1,301,520

This can also be written as 24 x 31 x 51 x 111 x 171 x 291 = 1,301,520

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


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