Q: What are the prime factors of the number 137,416,455?

 A: 3, 5, 11, 19, 769

Why are those the prime factors of the number 137,416,455?

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 137,416,455

137,416,455
Factor Arrows
345,805,485
Factor Arrows
315,268,495
Factor Arrows
53,053,699
Factor Arrows
11277,609
Factor Arrows
1914,611
Factor Arrows
19769

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, 11, 19, 769

We can check our work by multiplying all of the prime factors together: 3 x 3 x 5 x 11 x 19 x 19 x 769 = 137,416,455

This can also be written as 32 x 51 x 111 x 192 x 7691 = 137,416,455

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


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