What is the Greatest Common Factor of 77781 and 77787?

Greatest common factor (GCF) of 77781 and 77787 is 3.

GCF(77781,77787) = 3

We will now calculate the prime factors of 77781 and 77787, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 77781 and 77787.

How to find the GCF of 77781 and 77787?

We will first find the prime factorization of 77781 and 77787. After we will calculate the factors of 77781 and 77787 and find the biggest common factor number .

Step-1: Prime Factorization of 77781

Prime factors of 77781 are 3, 11, 2357. Prime factorization of 77781 in exponential form is:

77781 = 3¹ × 11¹ × 2357¹

Step-2: Prime Factorization of 77787

Prime factors of 77787 are 3, 43, 67. Prime factorization of 77787 in exponential form is:

77787 = 3³ × 43¹ × 67¹

Step-3: Factors of 77781

List of positive integer factors of 77781 that divides 77781 without a remainder.

1, 3, 11, 33, 2357, 7071, 25927

Step-4: Factors of 77787

List of positive integer factors of 77787 that divides 77781 without a remainder.

1, 3, 9, 27, 43, 67, 129, 201, 387, 603, 1161, 1809, 2881, 8643, 25929

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 77781 and 77787. The biggest common factor number is the GCF number.
So the greatest common factor 77781 and 77787 is 3.

Also check out the Least Common Multiple of 77781 and 77787