Q: What are the prime factors of the number 47,855,872?

 A: 2, 131, 1427

Why are those the prime factors of the number 47,855,872?

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 47,855,872

47,855,872
Factor Arrows
223,927,936
Factor Arrows
211,963,968
Factor Arrows
25,981,984
Factor Arrows
22,990,992
Factor Arrows
21,495,496
Factor Arrows
2747,748
Factor Arrows
2373,874
Factor Arrows
2186,937
Factor Arrows
1311,427

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, 131, 1427

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 131 x 1,427 = 47,855,872

This can also be written as 28 x 1311 x 1,4271 = 47,855,872

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


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