Q: What are the prime factors of the number 741,312?

 A: 2, 3, 11, 13

Why are those the prime factors of the number 741,312?

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 741,312

741,312
Factor Arrows
2370,656
Factor Arrows
2185,328
Factor Arrows
292,664
Factor Arrows
246,332
Factor Arrows
223,166
Factor Arrows
211,583
Factor Arrows
33,861
Factor Arrows
31,287
Factor Arrows
3429
Factor Arrows
3143
Factor Arrows
1113

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, 11, 13

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 3 x 3 x 3 x 3 x 11 x 13 = 741,312

This can also be written as 26 x 34 x 111 x 131 = 741,312

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


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