Q: What are the prime factors of the number 766,518,368?

 A: 2, 7, 11, 19, 2339

Why are those the prime factors of the number 766,518,368?

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 766,518,368

766,518,368
Factor Arrows
2383,259,184
Factor Arrows
2191,629,592
Factor Arrows
295,814,796
Factor Arrows
247,907,398
Factor Arrows
223,953,699
Factor Arrows
73,421,957
Factor Arrows
7488,851
Factor Arrows
1144,441
Factor Arrows
192,339

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, 7, 11, 19, 2339

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 7 x 7 x 11 x 19 x 2,339 = 766,518,368

This can also be written as 25 x 72 x 111 x 191 x 2,3391 = 766,518,368

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


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