What is the Greatest Common Factor of 21350 and 21355?

Greatest common factor (GCF) of 21350 and 21355 is 5.

GCF(21350,21355) = 5

We will now calculate the prime factors of 21350 and 21355, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 21350 and 21355.

How to find the GCF of 21350 and 21355?

We will first find the prime factorization of 21350 and 21355. After we will calculate the factors of 21350 and 21355 and find the biggest common factor number .

Step-1: Prime Factorization of 21350

Prime factors of 21350 are 2, 5, 7, 61. Prime factorization of 21350 in exponential form is:

21350 = 2¹ × 5² × 7¹ × 61¹

Step-2: Prime Factorization of 21355

Prime factors of 21355 are 5, 4271. Prime factorization of 21355 in exponential form is:

21355 = 5¹ × 4271¹

Step-3: Factors of 21350

List of positive integer factors of 21350 that divides 21350 without a remainder.

1, 2, 5, 7, 10, 14, 25, 35, 50, 61, 70, 122, 175, 305, 350, 427, 610, 854, 1525, 2135, 3050, 4270, 10675

Step-4: Factors of 21355

List of positive integer factors of 21355 that divides 21350 without a remainder.

1, 5, 4271

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 21350 and 21355. The biggest common factor number is the GCF number.
So the greatest common factor 21350 and 21355 is 5.

Also check out the Least Common Multiple of 21350 and 21355