What is the Greatest Common Factor of 1953 and 1966?

Greatest common factor (GCF) of 1953 and 1966 is 1.

GCF(1953,1966) = 1

We will now calculate the prime factors of 1953 and 1966, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 1953 and 1966.

How to find the GCF of 1953 and 1966?

We will first find the prime factorization of 1953 and 1966. After we will calculate the factors of 1953 and 1966 and find the biggest common factor number .

Step-1: Prime Factorization of 1953

Prime factors of 1953 are 3, 7, 31. Prime factorization of 1953 in exponential form is:

1953 = 3² × 7¹ × 31¹

Step-2: Prime Factorization of 1966

Prime factors of 1966 are 2, 983. Prime factorization of 1966 in exponential form is:

1966 = 2¹ × 983¹

Step-3: Factors of 1953

List of positive integer factors of 1953 that divides 1953 without a remainder.

1, 3, 7, 9, 21, 31, 63, 93, 217, 279, 651

Step-4: Factors of 1966

List of positive integer factors of 1966 that divides 1953 without a remainder.

1, 2, 983

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 1953 and 1966. The biggest common factor number is the GCF number.
So the greatest common factor 1953 and 1966 is 1.

Also check out the Least Common Multiple of 1953 and 1966