Q: What are the prime factors of the number 141,620,724?

 A: 2, 3, 7, 41, 1523

Why are those the prime factors of the number 141,620,724?

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 141,620,724

141,620,724
Factor Arrows
270,810,362
Factor Arrows
235,405,181
Factor Arrows
311,801,727
Factor Arrows
33,933,909
Factor Arrows
31,311,303
Factor Arrows
3437,101
Factor Arrows
762,443
Factor Arrows
411,523

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, 41, 1523

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 3 x 3 x 7 x 41 x 1,523 = 141,620,724

This can also be written as 22 x 34 x 71 x 411 x 1,5231 = 141,620,724

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


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