Q: What are the prime factors of the number 31,827,285?

 A: 3, 5, 7, 23, 191

Why are those the prime factors of the number 31,827,285?

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 31,827,285

31,827,285
Factor Arrows
310,609,095
Factor Arrows
33,536,365
Factor Arrows
5707,273
Factor Arrows
7101,039
Factor Arrows
234,393
Factor Arrows
23191

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, 5, 7, 23, 191

We can check our work by multiplying all of the prime factors together: 3 x 3 x 5 x 7 x 23 x 23 x 191 = 31,827,285

This can also be written as 32 x 51 x 71 x 232 x 1911 = 31,827,285

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


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