Q: What are the prime factors of the number 911,190?

 A: 2, 3, 5, 7, 4339

Why are those the prime factors of the number 911,190?

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 911,190

911,190
Factor Arrows
2455,595
Factor Arrows
3151,865
Factor Arrows
530,373
Factor Arrows
74,339

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, 4339

We can check our work by multiplying all of the prime factors together: 2 x 3 x 5 x 7 x 4,339 = 911,190

This can also be written as 21 x 31 x 51 x 71 x 4,3391 = 911,190

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


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