What is the Greatest Common Factor of 77890 and 77905?

Greatest common factor (GCF) of 77890 and 77905 is 5.

GCF(77890,77905) = 5

We will now calculate the prime factors of 77890 and 77905, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 77890 and 77905.

How to find the GCF of 77890 and 77905?

We will first find the prime factorization of 77890 and 77905. After we will calculate the factors of 77890 and 77905 and find the biggest common factor number .

Step-1: Prime Factorization of 77890

Prime factors of 77890 are 2, 5, 7789. Prime factorization of 77890 in exponential form is:

77890 = 2¹ × 5¹ × 7789¹

Step-2: Prime Factorization of 77905

Prime factors of 77905 are 5, 15581. Prime factorization of 77905 in exponential form is:

77905 = 5¹ × 15581¹

Step-3: Factors of 77890

List of positive integer factors of 77890 that divides 77890 without a remainder.

1, 2, 5, 10, 7789, 15578, 38945

Step-4: Factors of 77905

List of positive integer factors of 77905 that divides 77890 without a remainder.

1, 5, 15581

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 77890 and 77905. The biggest common factor number is the GCF number.
So the greatest common factor 77890 and 77905 is 5.

Also check out the Least Common Multiple of 77890 and 77905