What is the Greatest Common Factor of 68809 and 68820?

Greatest common factor (GCF) of 68809 and 68820 is 1.

GCF(68809,68820) = 1

We will now calculate the prime factors of 68809 and 68820, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 68809 and 68820.

How to find the GCF of 68809 and 68820?

We will first find the prime factorization of 68809 and 68820. After we will calculate the factors of 68809 and 68820 and find the biggest common factor number .

Step-1: Prime Factorization of 68809

Prime factors of 68809 are 13, 67, 79. Prime factorization of 68809 in exponential form is:

68809 = 13¹ × 67¹ × 79¹

Step-2: Prime Factorization of 68820

Prime factors of 68820 are 2, 3, 5, 31, 37. Prime factorization of 68820 in exponential form is:

68820 = 2² × 3¹ × 5¹ × 31¹ × 37¹

Step-3: Factors of 68809

List of positive integer factors of 68809 that divides 68809 without a remainder.

1, 13, 67, 79, 871, 1027, 5293

Step-4: Factors of 68820

List of positive integer factors of 68820 that divides 68809 without a remainder.

1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 31, 37, 60, 62, 74, 93, 111, 124, 148, 155, 185, 186, 222, 310, 370, 372, 444, 465, 555, 620, 740, 930, 1110, 1147, 1860, 2220, 2294, 3441, 4588, 5735, 6882, 11470, 13764, 17205, 22940, 34410

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 68809 and 68820. The biggest common factor number is the GCF number.
So the greatest common factor 68809 and 68820 is 1.

Also check out the Least Common Multiple of 68809 and 68820