Greatest Common Factor of 1982 and 1990

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 1982, 1990 i.e. 2 largest integer by which both the numbers can be divided.

Greatest common factor (GCF) of 1982 and 1990 is 2.

GCF(1982,1990) = 2

GCF of 1982 and 1990

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

GCF of:
and

Greatest Common Factor of 1982 and 1990

GCF of 1982 and 1990 is 2

Prime Factorization of 1982


2 1982
991 991
1

Prime factors of 1982 are 2,991. Prime factorization of 1982 in exponential form is:

1982 = 21×9911

Prime Factorization of 1990


2 1990
5 995
199 199
1

Prime factors of 1990 are 2,5,199. Prime factorization of 1990 in exponential form is:

1990 = 21×51×1991

∴ So by taking common prime factors GCF of 1982 and 1990 is 2

Greatest Common Factor of 1982 and 1990 by matching factors method

Factors of 1982

List of positive integer factors of 1982 that divides 1982 without a remainder.

1,2,991,1982

Factors of 1990

List of positive integer factors of 1990 that divides 1990 without a remainder.

1,2,5,10,199,398,995,1990

Greatest Common Factor

We found the factors and prime factorization of 1982 and 1990. The biggest common factor number is the GCF number.
So the greatest common factor 1982 and 1990 is 2.

Also check out the Least Common Multiple of 1982 and 1990

Properties of GCF 1982 and 1990

(i) The GCF of 1982 and 1990 is associative

GCF of 1982 and 1990 = GCF of 1990 and 1982

Related Greatest Common Factor of 1982

Related Greatest Common Factor of 1990

Frequently Asked Questions on GCF of 1982 and 1990

1. What is the GCF of 1982 and 1990?

Answer: GCF of 1982 and 1990 is 2.

2. What are the Factors of 1982?

Answer: Factors of 1982 are 1, 2, 991, 1982. There are 4 integers that are factors of 1982. The greatest factor of 1982 is 1982.

3. What are the Factors of 1990?

Answer: Factors of 1990 are 1, 2, 5, 10, 199, 398, 995, 1990. There are 8 integers that are factors of 1990. The greatest factor of 1990 is 1990.

4. How to Find the GCF of 1982 and 1990?

Answer:

Greatest Common Factor of 1982 and 1990 = 2

Step 1: Find the prime factorization of 1982

1982 = 2 x 991

Step 2: Find the prime factorization of 1990

1990 = 2 x 5 x 199

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

GCF = 2

Step 4: Therefore, the greatest common factor of 1982 and 1990 is 2