Q: What are the prime factors of the number 997,888?

 A: 2, 1949

Why are those the prime factors of the number 997,888?

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 997,888

997,888
Factor Arrows
2498,944
Factor Arrows
2249,472
Factor Arrows
2124,736
Factor Arrows
262,368
Factor Arrows
231,184
Factor Arrows
215,592
Factor Arrows
27,796
Factor Arrows
23,898
Factor Arrows
21,949

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, 1949

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 1,949 = 997,888

This can also be written as 29 x 1,9491 = 997,888

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


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