What is the Greatest Common Factor of 381 and 388?

Greatest common factor (GCF) of 381 and 388 is 1.

GCF(381,388) = 1

We will now calculate the prime factors of 381 and 388, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 381 and 388.

How to find the GCF of 381 and 388?

We will first find the prime factorization of 381 and 388. After we will calculate the factors of 381 and 388 and find the biggest common factor number .

Step-1: Prime Factorization of 381

Prime factors of 381 are 3, 127. Prime factorization of 381 in exponential form is:

381 = 3¹ × 127¹

Step-2: Prime Factorization of 388

Prime factors of 388 are 2, 97. Prime factorization of 388 in exponential form is:

388 = 2² × 97¹

Step-3: Factors of 381

List of positive integer factors of 381 that divides 381 without a remainder.

1, 3, 127

Step-4: Factors of 388

List of positive integer factors of 388 that divides 381 without a remainder.

1, 2, 4, 97, 194

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 381 and 388. The biggest common factor number is the GCF number.
So the greatest common factor 381 and 388 is 1.

Also check out the Least Common Multiple of 381 and 388