Q: What are the prime factors of the number 551,544,875?

 A: 5, 7, 43, 107, 137

Why are those the prime factors of the number 551,544,875?

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 551,544,875

551,544,875
Factor Arrows
5110,308,975
Factor Arrows
522,061,795
Factor Arrows
54,412,359
Factor Arrows
7630,337
Factor Arrows
4314,659
Factor Arrows
107137

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:

5, 7, 43, 107, 137

We can check our work by multiplying all of the prime factors together: 5 x 5 x 5 x 7 x 43 x 107 x 137 = 551,544,875

This can also be written as 53 x 71 x 431 x 1071 x 1371 = 551,544,875

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


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