Q: What are the prime factors of the number 112,422,240?

 A: 2, 3, 5, 7, 19, 587

Why are those the prime factors of the number 112,422,240?

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 112,422,240

112,422,240
Factor Arrows
256,211,120
Factor Arrows
228,105,560
Factor Arrows
214,052,780
Factor Arrows
27,026,390
Factor Arrows
23,513,195
Factor Arrows
31,171,065
Factor Arrows
3390,355
Factor Arrows
578,071
Factor Arrows
711,153
Factor Arrows
19587

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, 5, 7, 19, 587

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 3 x 5 x 7 x 19 x 587 = 112,422,240

This can also be written as 25 x 32 x 51 x 71 x 191 x 5871 = 112,422,240

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


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