Q: What are the prime factors of the number 51,155,631?

 A: 3, 131, 1607

Why are those the prime factors of the number 51,155,631?

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 51,155,631

51,155,631
Factor Arrows
317,051,877
Factor Arrows
35,683,959
Factor Arrows
31,894,653
Factor Arrows
3631,551
Factor Arrows
3210,517
Factor Arrows
1311,607

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:

3, 131, 1607

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 3 x 3 x 131 x 1,607 = 51,155,631

This can also be written as 35 x 1311 x 1,6071 = 51,155,631

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


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