Q: What are the prime factors of the number 137,577,385?

 A: 5, 11, 19, 173, 761

Why are those the prime factors of the number 137,577,385?

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 137,577,385

137,577,385
Factor Arrows
527,515,477
Factor Arrows
112,501,407
Factor Arrows
19131,653
Factor Arrows
173761

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:

5, 11, 19, 173, 761

We can check our work by multiplying all of the prime factors together: 5 x 11 x 19 x 173 x 761 = 137,577,385

This can also be written as 51 x 111 x 191 x 1731 x 7611 = 137,577,385

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


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