Q: What are the prime factors of the number 1,231,680?

 A: 2, 3, 5, 1283

Why are those the prime factors of the number 1,231,680?

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 1,231,680

1,231,680
Factor Arrows
2615,840
Factor Arrows
2307,920
Factor Arrows
2153,960
Factor Arrows
276,980
Factor Arrows
238,490
Factor Arrows
219,245
Factor Arrows
36,415
Factor Arrows
51,283

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, 1283

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 3 x 5 x 1,283 = 1,231,680

This can also be written as 26 x 31 x 51 x 1,2831 = 1,231,680

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


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