What is the Greatest Common Factor of 68605 and 68620?

Greatest common factor (GCF) of 68605 and 68620 is 5.

GCF(68605,68620) = 5

We will now calculate the prime factors of 68605 and 68620, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 68605 and 68620.

How to find the GCF of 68605 and 68620?

We will first find the prime factorization of 68605 and 68620. After we will calculate the factors of 68605 and 68620 and find the biggest common factor number .

Step-1: Prime Factorization of 68605

Prime factors of 68605 are 5, 13721. Prime factorization of 68605 in exponential form is:

68605 = 5¹ × 13721¹

Step-2: Prime Factorization of 68620

Prime factors of 68620 are 2, 5, 47, 73. Prime factorization of 68620 in exponential form is:

68620 = 2² × 5¹ × 47¹ × 73¹

Step-3: Factors of 68605

List of positive integer factors of 68605 that divides 68605 without a remainder.

1, 5, 13721

Step-4: Factors of 68620

List of positive integer factors of 68620 that divides 68605 without a remainder.

1, 2, 4, 5, 10, 20, 47, 73, 94, 146, 188, 235, 292, 365, 470, 730, 940, 1460, 3431, 6862, 13724, 17155, 34310

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 68605 and 68620. The biggest common factor number is the GCF number.
So the greatest common factor 68605 and 68620 is 5.

Also check out the Least Common Multiple of 68605 and 68620