Q: What are the prime factors of the number 65,296,224?

 A: 2, 3, 7, 661

Why are those the prime factors of the number 65,296,224?

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 65,296,224

65,296,224
Factor Arrows
232,648,112
Factor Arrows
216,324,056
Factor Arrows
28,162,028
Factor Arrows
24,081,014
Factor Arrows
22,040,507
Factor Arrows
3680,169
Factor Arrows
3226,723
Factor Arrows
732,389
Factor Arrows
74,627
Factor Arrows
7661

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, 7, 661

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 3 x 7 x 7 x 7 x 661 = 65,296,224

This can also be written as 25 x 32 x 73 x 6611 = 65,296,224

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


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