Q: What are the prime factors of the number 345,111,228?

 A: 2, 3, 7, 11, 23, 5413

Why are those the prime factors of the number 345,111,228?

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 345,111,228

345,111,228
Factor Arrows
2172,555,614
Factor Arrows
286,277,807
Factor Arrows
328,759,269
Factor Arrows
39,586,423
Factor Arrows
71,369,489
Factor Arrows
11124,499
Factor Arrows
235,413

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, 7, 11, 23, 5413

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 7 x 11 x 23 x 5,413 = 345,111,228

This can also be written as 22 x 32 x 71 x 111 x 231 x 5,4131 = 345,111,228

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


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