Q: What are the prime factors of the number 656,064?

 A: 2, 3, 17, 67

Why are those the prime factors of the number 656,064?

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 656,064

656,064
Factor Arrows
2328,032
Factor Arrows
2164,016
Factor Arrows
282,008
Factor Arrows
241,004
Factor Arrows
220,502
Factor Arrows
210,251
Factor Arrows
33,417
Factor Arrows
31,139
Factor Arrows
1767

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, 17, 67

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 3 x 3 x 17 x 67 = 656,064

This can also be written as 26 x 32 x 171 x 671 = 656,064

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


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