Q: What are the prime factors of the number 249,191,516?

 A: 2, 7, 31, 287087

Why are those the prime factors of the number 249,191,516?

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 249,191,516

249,191,516
Factor Arrows
2124,595,758
Factor Arrows
262,297,879
Factor Arrows
78,899,697
Factor Arrows
31287,087

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, 31, 287087

We can check our work by multiplying all of the prime factors together: 2 x 2 x 7 x 31 x 287,087 = 249,191,516

This can also be written as 22 x 71 x 311 x 287,0871 = 249,191,516

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


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