Q: What are the prime factors of the number 2,053,120?

 A: 2, 5, 401

Why are those the prime factors of the number 2,053,120?

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 2,053,120

2,053,120
Factor Arrows
21,026,560
Factor Arrows
2513,280
Factor Arrows
2256,640
Factor Arrows
2128,320
Factor Arrows
264,160
Factor Arrows
232,080
Factor Arrows
216,040
Factor Arrows
28,020
Factor Arrows
24,010
Factor Arrows
22,005
Factor Arrows
5401

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, 5, 401

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 2 x 2 x 5 x 401 = 2,053,120

This can also be written as 210 x 51 x 4011 = 2,053,120

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


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