Q: What are the prime factors of the number 761,816,736?

 A: 2, 3, 41, 149, 433

Why are those the prime factors of the number 761,816,736?

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 761,816,736

761,816,736
Factor Arrows
2380,908,368
Factor Arrows
2190,454,184
Factor Arrows
295,227,092
Factor Arrows
247,613,546
Factor Arrows
223,806,773
Factor Arrows
37,935,591
Factor Arrows
32,645,197
Factor Arrows
4164,517
Factor Arrows
149433

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, 41, 149, 433

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 3 x 41 x 149 x 433 = 761,816,736

This can also be written as 25 x 32 x 411 x 1491 x 4331 = 761,816,736

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


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