Greatest Common Factor of 1971 and 1977

Created By : Jatin Gogia

Reviewed By : Rajasekhar Valipishetty

Last Updated : Apr 06, 2023

Make use of GCF Calculator to quickly find the Greatest Common Factor of numbers 1971, 1977 i.e. 3 largest integer by which both the numbers can be divided.

Greatest common factor (GCF) of 1971 and 1977 is 3.

GCF(1971,1977) = 3

GCF of 1971 and 1977

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

GCF of:
and

Greatest Common Factor of 1971 and 1977

GCF of 1971 and 1977 is 3

Prime Factorization of 1971


3 1971
3 657
3 219
73 73
1

Prime factors of 1971 are 3,73. Prime factorization of 1971 in exponential form is:

1971 = 33×731

Prime Factorization of 1977


3 1977
659 659
1

Prime factors of 1977 are 3,659. Prime factorization of 1977 in exponential form is:

1977 = 31×6591

∴ So by taking common prime factors GCF of 1971 and 1977 is 3

Greatest Common Factor of 1971 and 1977 by matching factors method

Factors of 1971

List of positive integer factors of 1971 that divides 1971 without a remainder.

1,3,9,27,73,219,657,1971

Factors of 1977

List of positive integer factors of 1977 that divides 1977 without a remainder.

1,3,659,1977

Greatest Common Factor

We found the factors and prime factorization of 1971 and 1977. The biggest common factor number is the GCF number.
So the greatest common factor 1971 and 1977 is 3.

Also check out the Least Common Multiple of 1971 and 1977

Properties of GCF 1971 and 1977

(i) The GCF of 1971 and 1977 is associative

GCF of 1971 and 1977 = GCF of 1977 and 1971

Related Greatest Common Factor of 1971

Related Greatest Common Factor of 1977

Frequently Asked Questions on GCF of 1971 and 1977

1. What is the GCF of 1971 and 1977?

Answer: GCF of 1971 and 1977 is 3.

2. What are the Factors of 1971?

Answer: Factors of 1971 are 1, 3, 9, 27, 73, 219, 657, 1971. There are 8 integers that are factors of 1971. The greatest factor of 1971 is 1971.

3. What are the Factors of 1977?

Answer: Factors of 1977 are 1, 3, 659, 1977. There are 4 integers that are factors of 1977. The greatest factor of 1977 is 1977.

4. How to Find the GCF of 1971 and 1977?

Answer:

Greatest Common Factor of 1971 and 1977 = 3

Step 1: Find the prime factorization of 1971

1971 = 3 x 3 x 3 x 73

Step 2: Find the prime factorization of 1977

1977 = 3 x 659

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

GCF = 3

Step 4: Therefore, the greatest common factor of 1971 and 1977 is 3