3 divides 81 without remainder (3*27 = 81) so 3 is a factor of 81.
3 cannot be divided without remainder by any number other than 1 and 3 itself, so 3 is a prime.
Combining the two statements, 3 is a prime factor of 81.
The prime factorization of 81 is: 3 X 3 X 3 X 3
factors: 1, 3, 9, 27, 81 prime factor: 3
3 x 3 x 3 x 3
81 = 3^4 so 3 is a prime factor.
81 = 3^4
The factors of 81 are: 1 3 9 27 81 The prime factor is: 3
The only prime factor of 81 is 3.
The only prime factor of 81 is: 3.The prime factors of 225 are: 3 and 5.
Just 3
The multiples of 81 are infinite. The factors of 81 are: 1, 3, 9, 27, 81.
The factors of 37 are 1 and 37. The factors of 81 are 1, 3, 9, 27, and 81. They have only one factor in common - 1. Since the greatest common factor of 37 and 81 is 1, they are relatively prime. You can also look at the prime factors to determine the greatest common factor. 37 is a prime number, so its only prime factor is itself, 37. The prime factors of 81 are 3, 3, 3, and 3. They have no prime factors in common, so they are relatively prime, which means their greatest common factor is 1.
81 is equivilant to 3^4135 is equivilant to 5*(3^3)Therefore the only prime factor of 81 and 135 is 3