Q: What are the prime factors of the number 77,203,605?

 A: 3, 5, 149, 34543

Why are those the prime factors of the number 77,203,605?

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 77,203,605

77,203,605
Factor Arrows
325,734,535
Factor Arrows
55,146,907
Factor Arrows
14934,543

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, 149, 34543

We can check our work by multiplying all of the prime factors together: 3 x 5 x 149 x 34,543 = 77,203,605

This can also be written as 31 x 51 x 1491 x 34,5431 = 77,203,605

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


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