Q: What are the prime factors of the number 998,480?

 A: 2, 5, 7, 1783

Why are those the prime factors of the number 998,480?

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 998,480

998,480
Factor Arrows
2499,240
Factor Arrows
2249,620
Factor Arrows
2124,810
Factor Arrows
262,405
Factor Arrows
512,481
Factor Arrows
71,783

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, 7, 1783

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 7 x 1,783 = 998,480

This can also be written as 24 x 51 x 71 x 1,7831 = 998,480

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


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