What is the Greatest Common Factor of 99770 and 99780?

Greatest common factor (GCF) of 99770 and 99780 is 10.

GCF(99770,99780) = 10

We will now calculate the prime factors of 99770 and 99780, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 99770 and 99780.

How to find the GCF of 99770 and 99780?

We will first find the prime factorization of 99770 and 99780. After we will calculate the factors of 99770 and 99780 and find the biggest common factor number .

Step-1: Prime Factorization of 99770

Prime factors of 99770 are 2, 5, 11, 907. Prime factorization of 99770 in exponential form is:

99770 = 2¹ × 5¹ × 11¹ × 907¹

Step-2: Prime Factorization of 99780

Prime factors of 99780 are 2, 3, 5, 1663. Prime factorization of 99780 in exponential form is:

99780 = 2² × 3¹ × 5¹ × 1663¹

Step-3: Factors of 99770

List of positive integer factors of 99770 that divides 99770 without a remainder.

1, 2, 5, 10, 11, 22, 55, 110, 907, 1814, 4535, 9070, 9977, 19954, 49885

Step-4: Factors of 99780

List of positive integer factors of 99780 that divides 99770 without a remainder.

1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 1663, 3326, 4989, 6652, 8315, 9978, 16630, 19956, 24945, 33260, 49890

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 99770 and 99780. The biggest common factor number is the GCF number.
So the greatest common factor 99770 and 99780 is 10.

Also check out the Least Common Multiple of 99770 and 99780