What is the Greatest Common Factor of 75770 and 75780?

Greatest common factor (GCF) of 75770 and 75780 is 10.

GCF(75770,75780) = 10

We will now calculate the prime factors of 75770 and 75780, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 75770 and 75780.

How to find the GCF of 75770 and 75780?

We will first find the prime factorization of 75770 and 75780. After we will calculate the factors of 75770 and 75780 and find the biggest common factor number .

Step-1: Prime Factorization of 75770

Prime factors of 75770 are 2, 5, 7577. Prime factorization of 75770 in exponential form is:

75770 = 2¹ × 5¹ × 7577¹

Step-2: Prime Factorization of 75780

Prime factors of 75780 are 2, 3, 5, 421. Prime factorization of 75780 in exponential form is:

75780 = 2² × 3² × 5¹ × 421¹

Step-3: Factors of 75770

List of positive integer factors of 75770 that divides 75770 without a remainder.

1, 2, 5, 10, 7577, 15154, 37885

Step-4: Factors of 75780

List of positive integer factors of 75780 that divides 75770 without a remainder.

1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 421, 842, 1263, 1684, 2105, 2526, 3789, 4210, 5052, 6315, 7578, 8420, 12630, 15156, 18945, 25260, 37890

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 75770 and 75780. The biggest common factor number is the GCF number.
So the greatest common factor 75770 and 75780 is 10.

Also check out the Least Common Multiple of 75770 and 75780