What is the Greatest Common Factor of 97780 and 97785?

Greatest common factor (GCF) of 97780 and 97785 is 5.

GCF(97780,97785) = 5

We will now calculate the prime factors of 97780 and 97785, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 97780 and 97785.

How to find the GCF of 97780 and 97785?

We will first find the prime factorization of 97780 and 97785. After we will calculate the factors of 97780 and 97785 and find the biggest common factor number .

Step-1: Prime Factorization of 97780

Prime factors of 97780 are 2, 5, 4889. Prime factorization of 97780 in exponential form is:

97780 = 2² × 5¹ × 4889¹

Step-2: Prime Factorization of 97785

Prime factors of 97785 are 3, 5, 41, 53. Prime factorization of 97785 in exponential form is:

97785 = 3² × 5¹ × 41¹ × 53¹

Step-3: Factors of 97780

List of positive integer factors of 97780 that divides 97780 without a remainder.

1, 2, 4, 5, 10, 20, 4889, 9778, 19556, 24445, 48890

Step-4: Factors of 97785

List of positive integer factors of 97785 that divides 97780 without a remainder.

1, 3, 5, 9, 15, 41, 45, 53, 123, 159, 205, 265, 369, 477, 615, 795, 1845, 2173, 2385, 6519, 10865, 19557, 32595

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 97780 and 97785. The biggest common factor number is the GCF number.
So the greatest common factor 97780 and 97785 is 5.

Also check out the Least Common Multiple of 97780 and 97785