Q: What are the prime factors of the number 1,020,480?

 A: 2, 3, 5, 1063

Why are those the prime factors of the number 1,020,480?

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 1,020,480

1,020,480
Factor Arrows
2510,240
Factor Arrows
2255,120
Factor Arrows
2127,560
Factor Arrows
263,780
Factor Arrows
231,890
Factor Arrows
215,945
Factor Arrows
35,315
Factor Arrows
51,063

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, 1063

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 1,063 = 1,020,480

This can also be written as 26 x 31 x 51 x 1,0631 = 1,020,480

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


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