Q: What are the prime factors of the number 741,520?

 A: 2, 5, 13, 23, 31

Why are those the prime factors of the number 741,520?

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 741,520

741,520
Factor Arrows
2370,760
Factor Arrows
2185,380
Factor Arrows
292,690
Factor Arrows
246,345
Factor Arrows
59,269
Factor Arrows
13713
Factor Arrows
2331

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, 13, 23, 31

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 13 x 23 x 31 = 741,520

This can also be written as 24 x 51 x 131 x 231 x 311 = 741,520

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


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