Q: What are the prime factors of the number 103,311,312?

 A: 2, 3, 13, 17, 9739

Why are those the prime factors of the number 103,311,312?

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 103,311,312

103,311,312
Factor Arrows
251,655,656
Factor Arrows
225,827,828
Factor Arrows
212,913,914
Factor Arrows
26,456,957
Factor Arrows
32,152,319
Factor Arrows
13165,563
Factor Arrows
179,739

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, 13, 17, 9739

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 13 x 17 x 9,739 = 103,311,312

This can also be written as 24 x 31 x 131 x 171 x 9,7391 = 103,311,312

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


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