Q: What are the prime factors of the number 111,281,274?

 A: 2, 3, 13, 37, 12853

Why are those the prime factors of the number 111,281,274?

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 111,281,274

111,281,274
Factor Arrows
255,640,637
Factor Arrows
318,546,879
Factor Arrows
36,182,293
Factor Arrows
13475,561
Factor Arrows
3712,853

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, 37, 12853

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 13 x 37 x 12,853 = 111,281,274

This can also be written as 21 x 32 x 131 x 371 x 12,8531 = 111,281,274

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


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