Q: What are the prime factors of the number 2,311,008?

 A: 2, 3, 7, 19, 181

Why are those the prime factors of the number 2,311,008?

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 2,311,008

2,311,008
Factor Arrows
21,155,504
Factor Arrows
2577,752
Factor Arrows
2288,876
Factor Arrows
2144,438
Factor Arrows
272,219
Factor Arrows
324,073
Factor Arrows
73,439
Factor Arrows
19181

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, 7, 19, 181

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 7 x 19 x 181 = 2,311,008

This can also be written as 25 x 31 x 71 x 191 x 1811 = 2,311,008

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


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