Q: What are the prime factors of the number 919,648?

 A: 2, 29, 991

Why are those the prime factors of the number 919,648?

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 919,648

919,648
Factor Arrows
2459,824
Factor Arrows
2229,912
Factor Arrows
2114,956
Factor Arrows
257,478
Factor Arrows
228,739
Factor Arrows
29991

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, 29, 991

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 29 x 991 = 919,648

This can also be written as 25 x 291 x 9911 = 919,648

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


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