Q: What are the prime factors of the number 705,163,712?

 A: 2, 11, 937, 1069

Why are those the prime factors of the number 705,163,712?

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 705,163,712

705,163,712
Factor Arrows
2352,581,856
Factor Arrows
2176,290,928
Factor Arrows
288,145,464
Factor Arrows
244,072,732
Factor Arrows
222,036,366
Factor Arrows
211,018,183
Factor Arrows
111,001,653
Factor Arrows
9371,069

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, 11, 937, 1069

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 11 x 937 x 1,069 = 705,163,712

This can also be written as 26 x 111 x 9371 x 1,0691 = 705,163,712

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


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