Q: What are the prime factors of the number 897,760?

 A: 2, 5, 31, 181

Why are those the prime factors of the number 897,760?

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 897,760

897,760
Factor Arrows
2448,880
Factor Arrows
2224,440
Factor Arrows
2112,220
Factor Arrows
256,110
Factor Arrows
228,055
Factor Arrows
55,611
Factor Arrows
31181

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, 31, 181

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 31 x 181 = 897,760

This can also be written as 25 x 51 x 311 x 1811 = 897,760

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


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