What is the Greatest Common Factor of 90640 and 90660?

Greatest common factor (GCF) of 90640 and 90660 is 20.

GCF(90640,90660) = 20

We will now calculate the prime factors of 90640 and 90660, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 90640 and 90660.

How to find the GCF of 90640 and 90660?

We will first find the prime factorization of 90640 and 90660. After we will calculate the factors of 90640 and 90660 and find the biggest common factor number .

Step-1: Prime Factorization of 90640

Prime factors of 90640 are 2, 5, 11, 103. Prime factorization of 90640 in exponential form is:

90640 = 2⁴ × 5¹ × 11¹ × 103¹

Step-2: Prime Factorization of 90660

Prime factors of 90660 are 2, 3, 5, 1511. Prime factorization of 90660 in exponential form is:

90660 = 2² × 3¹ × 5¹ × 1511¹

Step-3: Factors of 90640

List of positive integer factors of 90640 that divides 90640 without a remainder.

1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 103, 110, 176, 206, 220, 412, 440, 515, 824, 880, 1030, 1133, 1648, 2060, 2266, 4120, 4532, 5665, 8240, 9064, 11330, 18128, 22660, 45320

Step-4: Factors of 90660

List of positive integer factors of 90660 that divides 90640 without a remainder.

1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 1511, 3022, 4533, 6044, 7555, 9066, 15110, 18132, 22665, 30220, 45330

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 90640 and 90660. The biggest common factor number is the GCF number.
So the greatest common factor 90640 and 90660 is 20.

Also check out the Least Common Multiple of 90640 and 90660