Greatest Common Factor of 1970 and 1978

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 1970, 1978 i.e. 2 largest integer by which both the numbers can be divided.

Greatest common factor (GCF) of 1970 and 1978 is 2.

GCF(1970,1978) = 2

GCF of 1970 and 1978

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

GCF of:
and

Greatest Common Factor of 1970 and 1978

GCF of 1970 and 1978 is 2

Prime Factorization of 1970


2 1970
5 985
197 197
1

Prime factors of 1970 are 2,5,197. Prime factorization of 1970 in exponential form is:

1970 = 21×51×1971

Prime Factorization of 1978


2 1978
23 989
43 43
1

Prime factors of 1978 are 2,23,43. Prime factorization of 1978 in exponential form is:

1978 = 21×231×431

∴ So by taking common prime factors GCF of 1970 and 1978 is 2

Greatest Common Factor of 1970 and 1978 by matching factors method

Factors of 1970

List of positive integer factors of 1970 that divides 1970 without a remainder.

1,2,5,10,197,394,985,1970

Factors of 1978

List of positive integer factors of 1978 that divides 1978 without a remainder.

1,2,23,43,46,86,989,1978

Greatest Common Factor

We found the factors and prime factorization of 1970 and 1978. The biggest common factor number is the GCF number.
So the greatest common factor 1970 and 1978 is 2.

Also check out the Least Common Multiple of 1970 and 1978

Properties of GCF 1970 and 1978

(i) The GCF of 1970 and 1978 is associative

GCF of 1970 and 1978 = GCF of 1978 and 1970

Related Greatest Common Factor of 1970

Related Greatest Common Factor of 1978

Frequently Asked Questions on GCF of 1970 and 1978

1. What is the GCF of 1970 and 1978?

Answer: GCF of 1970 and 1978 is 2.

2. What are the Factors of 1970?

Answer: Factors of 1970 are 1, 2, 5, 10, 197, 394, 985, 1970. There are 8 integers that are factors of 1970. The greatest factor of 1970 is 1970.

3. What are the Factors of 1978?

Answer: Factors of 1978 are 1, 2, 23, 43, 46, 86, 989, 1978. There are 8 integers that are factors of 1978. The greatest factor of 1978 is 1978.

4. How to Find the GCF of 1970 and 1978?

Answer:

Greatest Common Factor of 1970 and 1978 = 2

Step 1: Find the prime factorization of 1970

1970 = 2 x 5 x 197

Step 2: Find the prime factorization of 1978

1978 = 2 x 23 x 43

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 1970 and 1978 is 2