Q: What are the prime factors of the number 64,401,520?

 A: 2, 5, 805019

Why are those the prime factors of the number 64,401,520?

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 64,401,520

64,401,520
Factor Arrows
232,200,760
Factor Arrows
216,100,380
Factor Arrows
28,050,190
Factor Arrows
24,025,095
Factor Arrows
5805,019

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, 5, 805019

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 805,019 = 64,401,520

This can also be written as 24 x 51 x 805,0191 = 64,401,520

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


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