What is the Greatest Common Factor of 21996 and 22015?

Greatest common factor (GCF) of 21996 and 22015 is 1.

GCF(21996,22015) = 1

We will now calculate the prime factors of 21996 and 22015, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 21996 and 22015.

How to find the GCF of 21996 and 22015?

We will first find the prime factorization of 21996 and 22015. After we will calculate the factors of 21996 and 22015 and find the biggest common factor number .

Step-1: Prime Factorization of 21996

Prime factors of 21996 are 2, 3, 13, 47. Prime factorization of 21996 in exponential form is:

21996 = 2² × 3² × 13¹ × 47¹

Step-2: Prime Factorization of 22015

Prime factors of 22015 are 5, 7, 17, 37. Prime factorization of 22015 in exponential form is:

22015 = 5¹ × 7¹ × 17¹ × 37¹

Step-3: Factors of 21996

List of positive integer factors of 21996 that divides 21996 without a remainder.

1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 47, 52, 78, 94, 117, 141, 156, 188, 234, 282, 423, 468, 564, 611, 846, 1222, 1692, 1833, 2444, 3666, 5499, 7332, 10998

Step-4: Factors of 22015

List of positive integer factors of 22015 that divides 21996 without a remainder.

1, 5, 7, 17, 35, 37, 85, 119, 185, 259, 595, 629, 1295, 3145, 4403

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 21996 and 22015. The biggest common factor number is the GCF number.
So the greatest common factor 21996 and 22015 is 1.

Also check out the Least Common Multiple of 21996 and 22015