Q: What are the prime factors of the number 998,560?

 A: 2, 5, 79

Why are those the prime factors of the number 998,560?

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 998,560

998,560
Factor Arrows
2499,280
Factor Arrows
2249,640
Factor Arrows
2124,820
Factor Arrows
262,410
Factor Arrows
231,205
Factor Arrows
56,241
Factor Arrows
7979

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, 79

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 5 x 79 x 79 = 998,560

This can also be written as 25 x 51 x 792 = 998,560

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


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