Q: What are the prime factors of the number 1,306,656?

 A: 2, 3, 13, 349

Why are those the prime factors of the number 1,306,656?

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 1,306,656

1,306,656
Factor Arrows
2653,328
Factor Arrows
2326,664
Factor Arrows
2163,332
Factor Arrows
281,666
Factor Arrows
240,833
Factor Arrows
313,611
Factor Arrows
34,537
Factor Arrows
13349

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, 13, 349

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 3 x 13 x 349 = 1,306,656

This can also be written as 25 x 32 x 131 x 3491 = 1,306,656

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


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