What is the Greatest Common Factor of 61680 and 61686?

Greatest common factor (GCF) of 61680 and 61686 is 6.

GCF(61680,61686) = 6

We will now calculate the prime factors of 61680 and 61686, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 61680 and 61686.

How to find the GCF of 61680 and 61686?

We will first find the prime factorization of 61680 and 61686. After we will calculate the factors of 61680 and 61686 and find the biggest common factor number .

Step-1: Prime Factorization of 61680

Prime factors of 61680 are 2, 3, 5, 257. Prime factorization of 61680 in exponential form is:

61680 = 2⁴ × 3¹ × 5¹ × 257¹

Step-2: Prime Factorization of 61686

Prime factors of 61686 are 2, 3, 23, 149. Prime factorization of 61686 in exponential form is:

61686 = 2¹ × 3² × 23¹ × 149¹

Step-3: Factors of 61680

List of positive integer factors of 61680 that divides 61680 without a remainder.

1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 257, 514, 771, 1028, 1285, 1542, 2056, 2570, 3084, 3855, 4112, 5140, 6168, 7710, 10280, 12336, 15420, 20560, 30840

Step-4: Factors of 61686

List of positive integer factors of 61686 that divides 61680 without a remainder.

1, 2, 3, 6, 9, 18, 23, 46, 69, 138, 149, 207, 298, 414, 447, 894, 1341, 2682, 3427, 6854, 10281, 20562, 30843

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 61680 and 61686. The biggest common factor number is the GCF number.
So the greatest common factor 61680 and 61686 is 6.

Also check out the Least Common Multiple of 61680 and 61686