Q: What are the prime factors of the number 318,577,152?

 A: 2, 3, 433, 479

Why are those the prime factors of the number 318,577,152?

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 318,577,152

318,577,152
Factor Arrows
2159,288,576
Factor Arrows
279,644,288
Factor Arrows
239,822,144
Factor Arrows
219,911,072
Factor Arrows
29,955,536
Factor Arrows
24,977,768
Factor Arrows
22,488,884
Factor Arrows
21,244,442
Factor Arrows
2622,221
Factor Arrows
3207,407
Factor Arrows
433479

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, 3, 433, 479

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 3 x 433 x 479 = 318,577,152

This can also be written as 29 x 31 x 4331 x 4791 = 318,577,152

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


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