Euclid's Division Lemma Prime Factorisation Calculator Factors of a Number Calculator LCM Calculator GCF Calculator Factor Tree Calculator LCM of Decimals LCM of Fractions GCF of Decimals GCF of Fractions

Greatest Common Factor of 81 and 83

Make use of GCF Calculator to quickly find the Greatest Common Factor of numbers 81, 83 i.e. 1 largest integer by which both the numbers can be divided.

Greatest common factor (GCF) of 81 and 83 is 1.

GCF(81,83) = 1

GCF of 81 and 83

Greatest common factor or Greatest common divisor (GCD) can be calculated in following way;

GCF of:
and

Greatest Common Factor of 81 and 83 by Prime factorization method

Prime Factorization of 81


3 81
3 27
3 9
3 3
1

Prime factors of 81 are 3. Prime factorization of 81 in exponential form is:

81 = 34

Prime Factorization of 83


83 83
1

Prime factors of 83 are 83.Prime factorization of 83 in exponential form is:

83 = 831

∴ So by taking common prime factors GCF of 81 and 83 is 1

Greatest Common Factor of 81 and 83 by matching factors method

Factors of 81

List of positive integer factors of 81 that divides 81 without a remainder.

1,3,9,27,81

Factors of 83

List of positive integer factors of 83 that divides 83 without a remainder.

1,83

Greatest Common Factor

We found the factors and prime factorization of 81 and 83. The biggest common factor number is the GCF number.
So the greatest common factor 81 and 83 is 1.

Also check out the Least Common Multiple of 81 and 83

Properties of GCF 81 and 83

(i) The GCF of 81 and 83 is associative

GCF of 81 and 83 = GCF of 83 and 81

Frequently Asked Questions on GCF of 81 and 83

1. What is the GCF of 81 and 83?

Answer: GCF of 81 and 83 is 1.

2. What are the Factors of 81?

Answer: Factors of 81 are 1, 3, 9, 27, 81. There are 5 integers that are factors of 81. The greatest factor of 81 is 81.

3. What are the Factors of 83?

Answer: Factors of 83 are 1, 83. There are 2 integers that are factors of 83. The greatest factor of 83 is 83.

4. How to Find the GCF of 81 and 83?

Answer:

Greatest Common Factor of 81 and 83 = 1

Step 1: Find the prime factorization of 81

81 = 3 x 3 x 3 x 3

Step 2: Find the prime factorization of 83

83 = 83

Step 3: Multiply those factors both numbers have in common in steps i) or ii) above to find the gcf:

GCF = = 1

Step 4: Therefore, the greatest common factor of 81 and 83 is 1