What is the Greatest Common Factor of 21056 and 21065?

Greatest common factor (GCF) of 21056 and 21065 is 1.

GCF(21056,21065) = 1

We will now calculate the prime factors of 21056 and 21065, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 21056 and 21065.

How to find the GCF of 21056 and 21065?

We will first find the prime factorization of 21056 and 21065. After we will calculate the factors of 21056 and 21065 and find the biggest common factor number .

Step-1: Prime Factorization of 21056

Prime factors of 21056 are 2, 7, 47. Prime factorization of 21056 in exponential form is:

21056 = 2⁶ × 7¹ × 47¹

Step-2: Prime Factorization of 21065

Prime factors of 21065 are 5, 11, 383. Prime factorization of 21065 in exponential form is:

21065 = 5¹ × 11¹ × 383¹

Step-3: Factors of 21056

List of positive integer factors of 21056 that divides 21056 without a remainder.

1, 2, 4, 7, 8, 14, 16, 28, 32, 47, 56, 64, 94, 112, 188, 224, 329, 376, 448, 658, 752, 1316, 1504, 2632, 3008, 5264, 10528

Step-4: Factors of 21065

List of positive integer factors of 21065 that divides 21056 without a remainder.

1, 5, 11, 55, 383, 1915, 4213

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 21056 and 21065. The biggest common factor number is the GCF number.
So the greatest common factor 21056 and 21065 is 1.

Also check out the Least Common Multiple of 21056 and 21065