Q: What are the prime factors of the number 234,743,670?

 A: 2, 3, 5, 7, 19, 2179

Why are those the prime factors of the number 234,743,670?

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 234,743,670

234,743,670
Factor Arrows
2117,371,835
Factor Arrows
339,123,945
Factor Arrows
313,041,315
Factor Arrows
34,347,105
Factor Arrows
31,449,035
Factor Arrows
5289,807
Factor Arrows
741,401
Factor Arrows
192,179

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, 5, 7, 19, 2179

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 3 x 5 x 7 x 19 x 2,179 = 234,743,670

This can also be written as 21 x 34 x 51 x 71 x 191 x 2,1791 = 234,743,670

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


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