Q: What are the prime factors of the number 103,005,856?

 A: 2, 17, 189349

Why are those the prime factors of the number 103,005,856?

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 103,005,856

103,005,856
Factor Arrows
251,502,928
Factor Arrows
225,751,464
Factor Arrows
212,875,732
Factor Arrows
26,437,866
Factor Arrows
23,218,933
Factor Arrows
17189,349

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, 17, 189349

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 17 x 189,349 = 103,005,856

This can also be written as 25 x 171 x 189,3491 = 103,005,856

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


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