What is the Greatest Common Factor of 7780 and 7784?

Greatest common factor (GCF) of 7780 and 7784 is 4.

GCF(7780,7784) = 4

We will now calculate the prime factors of 7780 and 7784, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 7780 and 7784.

How to find the GCF of 7780 and 7784?

We will first find the prime factorization of 7780 and 7784. After we will calculate the factors of 7780 and 7784 and find the biggest common factor number .

Step-1: Prime Factorization of 7780

Prime factors of 7780 are 2, 5, 389. Prime factorization of 7780 in exponential form is:

7780 = 2² × 5¹ × 389¹

Step-2: Prime Factorization of 7784

Prime factors of 7784 are 2, 7, 139. Prime factorization of 7784 in exponential form is:

7784 = 2³ × 7¹ × 139¹

Step-3: Factors of 7780

List of positive integer factors of 7780 that divides 7780 without a remainder.

1, 2, 4, 5, 10, 20, 389, 778, 1556, 1945, 3890

Step-4: Factors of 7784

List of positive integer factors of 7784 that divides 7780 without a remainder.

1, 2, 4, 7, 8, 14, 28, 56, 139, 278, 556, 973, 1112, 1946, 3892

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 7780 and 7784. The biggest common factor number is the GCF number.
So the greatest common factor 7780 and 7784 is 4.

Also check out the Least Common Multiple of 7780 and 7784