Q: What are the prime factors of the number 605,414,640?

 A: 2, 3, 5, 1103, 2287

Why are those the prime factors of the number 605,414,640?

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 605,414,640

605,414,640
Factor Arrows
2302,707,320
Factor Arrows
2151,353,660
Factor Arrows
275,676,830
Factor Arrows
237,838,415
Factor Arrows
312,612,805
Factor Arrows
52,522,561
Factor Arrows
1,1032,287

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, 5, 1103, 2287

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 5 x 1,103 x 2,287 = 605,414,640

This can also be written as 24 x 31 x 51 x 1,1031 x 2,2871 = 605,414,640

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


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