Q: What are the prime factors of the number 32,146,240?

 A: 2, 5, 7, 113, 127

Why are those the prime factors of the number 32,146,240?

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 32,146,240

32,146,240
Factor Arrows
216,073,120
Factor Arrows
28,036,560
Factor Arrows
24,018,280
Factor Arrows
22,009,140
Factor Arrows
21,004,570
Factor Arrows
2502,285
Factor Arrows
5100,457
Factor Arrows
714,351
Factor Arrows
113127

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, 5, 7, 113, 127

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 5 x 7 x 113 x 127 = 32,146,240

This can also be written as 26 x 51 x 71 x 1131 x 1271 = 32,146,240

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


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