Q: What are the prime factors of the number 513,855,488?

 A: 2, 125453

Why are those the prime factors of the number 513,855,488?

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 513,855,488

513,855,488
Factor Arrows
2256,927,744
Factor Arrows
2128,463,872
Factor Arrows
264,231,936
Factor Arrows
232,115,968
Factor Arrows
216,057,984
Factor Arrows
28,028,992
Factor Arrows
24,014,496
Factor Arrows
22,007,248
Factor Arrows
21,003,624
Factor Arrows
2501,812
Factor Arrows
2250,906
Factor Arrows
2125,453

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, 125453

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 2 x 2 x 2 x 2 x 125,453 = 513,855,488

This can also be written as 212 x 125,4531 = 513,855,488

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


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