What is the Greatest Common Factor of 7755 and 7761?

Greatest common factor (GCF) of 7755 and 7761 is 3.

GCF(7755,7761) = 3

We will now calculate the prime factors of 7755 and 7761, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 7755 and 7761.

How to find the GCF of 7755 and 7761?

We will first find the prime factorization of 7755 and 7761. After we will calculate the factors of 7755 and 7761 and find the biggest common factor number .

Step-1: Prime Factorization of 7755

Prime factors of 7755 are 3, 5, 11, 47. Prime factorization of 7755 in exponential form is:

7755 = 3¹ × 5¹ × 11¹ × 47¹

Step-2: Prime Factorization of 7761

Prime factors of 7761 are 3, 13, 199. Prime factorization of 7761 in exponential form is:

7761 = 3¹ × 13¹ × 199¹

Step-3: Factors of 7755

List of positive integer factors of 7755 that divides 7755 without a remainder.

1, 3, 5, 11, 15, 33, 47, 55, 141, 165, 235, 517, 705, 1551, 2585

Step-4: Factors of 7761

List of positive integer factors of 7761 that divides 7755 without a remainder.

1, 3, 13, 39, 199, 597, 2587

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 7755 and 7761. The biggest common factor number is the GCF number.
So the greatest common factor 7755 and 7761 is 3.

Also check out the Least Common Multiple of 7755 and 7761