Q: What are the prime factors of the number 101,255,913?

 A: 3, 11, 23, 61

Why are those the prime factors of the number 101,255,913?

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 101,255,913

101,255,913
Factor Arrows
333,751,971
Factor Arrows
311,250,657
Factor Arrows
33,750,219
Factor Arrows
31,250,073
Factor Arrows
3416,691
Factor Arrows
3138,897
Factor Arrows
346,299
Factor Arrows
315,433
Factor Arrows
111,403
Factor Arrows
2361

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:

3, 11, 23, 61

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 11 x 23 x 61 = 101,255,913

This can also be written as 38 x 111 x 231 x 611 = 101,255,913

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


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