Q: What are the prime factors of the number 42,122,106?

 A: 2, 3, 13, 59, 113

Why are those the prime factors of the number 42,122,106?

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 42,122,106

42,122,106
Factor Arrows
221,061,053
Factor Arrows
37,020,351
Factor Arrows
32,340,117
Factor Arrows
3780,039
Factor Arrows
3260,013
Factor Arrows
386,671
Factor Arrows
136,667
Factor Arrows
59113

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, 59, 113

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 3 x 3 x 13 x 59 x 113 = 42,122,106

This can also be written as 21 x 35 x 131 x 591 x 1131 = 42,122,106

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


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