Q: What are the prime factors of the number 491,152?

 A: 2, 30697

Why are those the prime factors of the number 491,152?

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 491,152

491,152
Factor Arrows
2245,576
Factor Arrows
2122,788
Factor Arrows
261,394
Factor Arrows
230,697

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, 30697

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 30,697 = 491,152

This can also be written as 24 x 30,6971 = 491,152

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


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