Q: What are the prime factors of the number 881,216?

 A: 2, 7, 281

Why are those the prime factors of the number 881,216?

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 881,216

881,216
Factor Arrows
2440,608
Factor Arrows
2220,304
Factor Arrows
2110,152
Factor Arrows
255,076
Factor Arrows
227,538
Factor Arrows
213,769
Factor Arrows
71,967
Factor Arrows
7281

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, 281

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 7 x 7 x 281 = 881,216

This can also be written as 26 x 72 x 2811 = 881,216

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


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