Q: What are the prime factors of the number 664,065,276?

 A: 2, 3, 7, 19, 61, 359

Why are those the prime factors of the number 664,065,276?

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 664,065,276

664,065,276
Factor Arrows
2332,032,638
Factor Arrows
2166,016,319
Factor Arrows
355,338,773
Factor Arrows
77,905,539
Factor Arrows
19416,081
Factor Arrows
1921,899
Factor Arrows
61359

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, 19, 61, 359

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 7 x 19 x 19 x 61 x 359 = 664,065,276

This can also be written as 22 x 31 x 71 x 192 x 611 x 3591 = 664,065,276

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


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