What is the Greatest Common Factor of 61620 and 61639?

Greatest common factor (GCF) of 61620 and 61639 is 1.

GCF(61620,61639) = 1

We will now calculate the prime factors of 61620 and 61639, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 61620 and 61639.

How to find the GCF of 61620 and 61639?

We will first find the prime factorization of 61620 and 61639. After we will calculate the factors of 61620 and 61639 and find the biggest common factor number .

Step-1: Prime Factorization of 61620

Prime factors of 61620 are 2, 3, 5, 13, 79. Prime factorization of 61620 in exponential form is:

61620 = 2² × 3¹ × 5¹ × 13¹ × 79¹

Step-2: Prime Factorization of 61639

Prime factors of 61639 are 53, 1163. Prime factorization of 61639 in exponential form is:

61639 = 53¹ × 1163¹

Step-3: Factors of 61620

List of positive integer factors of 61620 that divides 61620 without a remainder.

1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 79, 130, 156, 158, 195, 237, 260, 316, 390, 395, 474, 780, 790, 948, 1027, 1185, 1580, 2054, 2370, 3081, 4108, 4740, 5135, 6162, 10270, 12324, 15405, 20540, 30810

Step-4: Factors of 61639

List of positive integer factors of 61639 that divides 61620 without a remainder.

1, 53, 1163

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 61620 and 61639. The biggest common factor number is the GCF number.
So the greatest common factor 61620 and 61639 is 1.

Also check out the Least Common Multiple of 61620 and 61639