Q: What are the prime factors of the number 2,555,136?

 A: 2, 3, 1109

Why are those the prime factors of the number 2,555,136?

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 2,555,136

2,555,136
Factor Arrows
21,277,568
Factor Arrows
2638,784
Factor Arrows
2319,392
Factor Arrows
2159,696
Factor Arrows
279,848
Factor Arrows
239,924
Factor Arrows
219,962
Factor Arrows
29,981
Factor Arrows
33,327
Factor Arrows
31,109

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, 1109

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 3 x 3 x 1,109 = 2,555,136

This can also be written as 28 x 32 x 1,1091 = 2,555,136

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


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