Q: What are the prime factors of the number 551,756,856?

 A: 2, 3, 7, 79, 5939

Why are those the prime factors of the number 551,756,856?

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 551,756,856

551,756,856
Factor Arrows
2275,878,428
Factor Arrows
2137,939,214
Factor Arrows
268,969,607
Factor Arrows
322,989,869
Factor Arrows
73,284,267
Factor Arrows
7469,181
Factor Arrows
795,939

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, 7, 79, 5939

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 7 x 7 x 79 x 5,939 = 551,756,856

This can also be written as 23 x 31 x 72 x 791 x 5,9391 = 551,756,856

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


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