What is the Greatest Common Factor of 21515 and 21532?

Greatest common factor (GCF) of 21515 and 21532 is 1.

GCF(21515,21532) = 1

We will now calculate the prime factors of 21515 and 21532, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 21515 and 21532.

How to find the GCF of 21515 and 21532?

We will first find the prime factorization of 21515 and 21532. After we will calculate the factors of 21515 and 21532 and find the biggest common factor number .

Step-1: Prime Factorization of 21515

Prime factors of 21515 are 5, 13, 331. Prime factorization of 21515 in exponential form is:

21515 = 5¹ × 13¹ × 331¹

Step-2: Prime Factorization of 21532

Prime factors of 21532 are 2, 7, 769. Prime factorization of 21532 in exponential form is:

21532 = 2² × 7¹ × 769¹

Step-3: Factors of 21515

List of positive integer factors of 21515 that divides 21515 without a remainder.

1, 5, 13, 65, 331, 1655, 4303

Step-4: Factors of 21532

List of positive integer factors of 21532 that divides 21515 without a remainder.

1, 2, 4, 7, 14, 28, 769, 1538, 3076, 5383, 10766

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 21515 and 21532. The biggest common factor number is the GCF number.
So the greatest common factor 21515 and 21532 is 1.

Also check out the Least Common Multiple of 21515 and 21532