Q: What are the prime factors of the number 137,724,255?

 A: 3, 5, 19, 79, 2039

Why are those the prime factors of the number 137,724,255?

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 137,724,255

137,724,255
Factor Arrows
345,908,085
Factor Arrows
315,302,695
Factor Arrows
53,060,539
Factor Arrows
19161,081
Factor Arrows
792,039

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:

3, 5, 19, 79, 2039

We can check our work by multiplying all of the prime factors together: 3 x 3 x 5 x 19 x 79 x 2,039 = 137,724,255

This can also be written as 32 x 51 x 191 x 791 x 2,0391 = 137,724,255

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


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