What is the Greatest Common Factor of 1921 and 1928?

Greatest common factor (GCF) of 1921 and 1928 is 1.

GCF(1921,1928) = 1

We will now calculate the prime factors of 1921 and 1928, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 1921 and 1928.

How to find the GCF of 1921 and 1928?

We will first find the prime factorization of 1921 and 1928. After we will calculate the factors of 1921 and 1928 and find the biggest common factor number .

Step-1: Prime Factorization of 1921

Prime factors of 1921 are 17, 113. Prime factorization of 1921 in exponential form is:

1921 = 17¹ × 113¹

Step-2: Prime Factorization of 1928

Prime factors of 1928 are 2, 241. Prime factorization of 1928 in exponential form is:

1928 = 2³ × 241¹

Step-3: Factors of 1921

List of positive integer factors of 1921 that divides 1921 without a remainder.

1, 17, 113

Step-4: Factors of 1928

List of positive integer factors of 1928 that divides 1921 without a remainder.

1, 2, 4, 8, 241, 482, 964

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 1921 and 1928. The biggest common factor number is the GCF number.
So the greatest common factor 1921 and 1928 is 1.

Also check out the Least Common Multiple of 1921 and 1928