Q: What are the prime factors of the number 1,266,496?

 A: 2, 7, 11, 257

Why are those the prime factors of the number 1,266,496?

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 1,266,496

1,266,496
Factor Arrows
2633,248
Factor Arrows
2316,624
Factor Arrows
2158,312
Factor Arrows
279,156
Factor Arrows
239,578
Factor Arrows
219,789
Factor Arrows
72,827
Factor Arrows
11257

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, 7, 11, 257

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 7 x 11 x 257 = 1,266,496

This can also be written as 26 x 71 x 111 x 2571 = 1,266,496

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


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