53 / 81 = 0.65432 = 65.4%
The GCF of 53 and 81 is 1.
81 is 28 more than 53.
-28
81
If you mean: 53 81 41 47 and 31 then 81 is a composite number while all the rest are prime numbers
53 is the prime number.
28
How about: 9 times 9 = 81 or 81 times 1 = 81
81 times 7 or 7 times 81 equals 567
53/81
1 goes into 81 81 times.