Q: What are the prime factors of the number 7,407,744?

 A: 2, 3, 101, 191

Why are those the prime factors of the number 7,407,744?

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 7,407,744

7,407,744
Factor Arrows
23,703,872
Factor Arrows
21,851,936
Factor Arrows
2925,968
Factor Arrows
2462,984
Factor Arrows
2231,492
Factor Arrows
2115,746
Factor Arrows
257,873
Factor Arrows
319,291
Factor Arrows
101191

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, 101, 191

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 3 x 101 x 191 = 7,407,744

This can also be written as 27 x 31 x 1011 x 1911 = 7,407,744

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


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