Q: What are the prime factors of the number 705,535,744?

 A: 2, 43, 107, 599

Why are those the prime factors of the number 705,535,744?

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 705,535,744

705,535,744
Factor Arrows
2352,767,872
Factor Arrows
2176,383,936
Factor Arrows
288,191,968
Factor Arrows
244,095,984
Factor Arrows
222,047,992
Factor Arrows
211,023,996
Factor Arrows
25,511,998
Factor Arrows
22,755,999
Factor Arrows
4364,093
Factor Arrows
107599

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, 43, 107, 599

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 2 x 2 x 43 x 107 x 599 = 705,535,744

This can also be written as 28 x 431 x 1071 x 5991 = 705,535,744

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


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