Q: What are the prime factors of the number 1,955,072?

 A: 2, 7, 1091

Why are those the prime factors of the number 1,955,072?

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 1,955,072

1,955,072
Factor Arrows
2977,536
Factor Arrows
2488,768
Factor Arrows
2244,384
Factor Arrows
2122,192
Factor Arrows
261,096
Factor Arrows
230,548
Factor Arrows
215,274
Factor Arrows
27,637
Factor Arrows
71,091

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, 1091

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 7 x 1,091 = 1,955,072

This can also be written as 28 x 71 x 1,0911 = 1,955,072

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


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