Q: What are the prime factors of the number 64,604,400?

 A: 2, 3, 5, 7, 7691

Why are those the prime factors of the number 64,604,400?

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 64,604,400

64,604,400
Factor Arrows
232,302,200
Factor Arrows
216,151,100
Factor Arrows
28,075,550
Factor Arrows
24,037,775
Factor Arrows
31,345,925
Factor Arrows
5269,185
Factor Arrows
553,837
Factor Arrows
77,691

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, 7691

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 5 x 5 x 7 x 7,691 = 64,604,400

This can also be written as 24 x 31 x 52 x 71 x 7,6911 = 64,604,400

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


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