Q: What are the prime factors of the number 647,414,064?

 A: 2, 3, 11, 113, 3617

Why are those the prime factors of the number 647,414,064?

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 647,414,064

647,414,064
Factor Arrows
2323,707,032
Factor Arrows
2161,853,516
Factor Arrows
280,926,758
Factor Arrows
240,463,379
Factor Arrows
313,487,793
Factor Arrows
34,495,931
Factor Arrows
11408,721
Factor Arrows
1133,617

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, 11, 113, 3617

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 3 x 11 x 113 x 3,617 = 647,414,064

This can also be written as 24 x 32 x 111 x 1131 x 3,6171 = 647,414,064

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


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