What is the Greatest Common Factor of 77770 and 77781?

Greatest common factor (GCF) of 77770 and 77781 is 11.

GCF(77770,77781) = 11

We will now calculate the prime factors of 77770 and 77781, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 77770 and 77781.

How to find the GCF of 77770 and 77781?

We will first find the prime factorization of 77770 and 77781. After we will calculate the factors of 77770 and 77781 and find the biggest common factor number .

Step-1: Prime Factorization of 77770

Prime factors of 77770 are 2, 5, 7, 11, 101. Prime factorization of 77770 in exponential form is:

77770 = 2¹ × 5¹ × 7¹ × 11¹ × 101¹

Step-2: 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-3: Factors of 77770

List of positive integer factors of 77770 that divides 77770 without a remainder.

1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 70, 77, 101, 110, 154, 202, 385, 505, 707, 770, 1010, 1111, 1414, 2222, 3535, 5555, 7070, 7777, 11110, 15554, 38885

Step-4: Factors of 77781

List of positive integer factors of 77781 that divides 77770 without a remainder.

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

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 77770 and 77781. The biggest common factor number is the GCF number.
So the greatest common factor 77770 and 77781 is 11.

Also check out the Least Common Multiple of 77770 and 77781