Q: What are the prime factors of the number 311,203,224?

 A: 2, 3, 17, 71, 3581

Why are those the prime factors of the number 311,203,224?

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 311,203,224

311,203,224
Factor Arrows
2155,601,612
Factor Arrows
277,800,806
Factor Arrows
238,900,403
Factor Arrows
312,966,801
Factor Arrows
34,322,267
Factor Arrows
17254,251
Factor Arrows
713,581

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, 17, 71, 3581

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 17 x 71 x 3,581 = 311,203,224

This can also be written as 23 x 32 x 171 x 711 x 3,5811 = 311,203,224

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


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