Q: What are the prime factors of the number 77,734,020?

 A: 2, 3, 5, 7, 13, 23, 619

Why are those the prime factors of the number 77,734,020?

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 77,734,020

77,734,020
Factor Arrows
238,867,010
Factor Arrows
219,433,505
Factor Arrows
36,477,835
Factor Arrows
51,295,567
Factor Arrows
7185,081
Factor Arrows
1314,237
Factor Arrows
23619

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, 5, 7, 13, 23, 619

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 5 x 7 x 13 x 23 x 619 = 77,734,020

This can also be written as 22 x 31 x 51 x 71 x 131 x 231 x 6191 = 77,734,020

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


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