What is the Greatest Common Factor of 68540 and 68556?

Greatest common factor (GCF) of 68540 and 68556 is 4.

GCF(68540,68556) = 4

We will now calculate the prime factors of 68540 and 68556, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 68540 and 68556.

How to find the GCF of 68540 and 68556?

We will first find the prime factorization of 68540 and 68556. After we will calculate the factors of 68540 and 68556 and find the biggest common factor number .

Step-1: Prime Factorization of 68540

Prime factors of 68540 are 2, 5, 23, 149. Prime factorization of 68540 in exponential form is:

68540 = 2² × 5¹ × 23¹ × 149¹

Step-2: Prime Factorization of 68556

Prime factors of 68556 are 2, 3, 29, 197. Prime factorization of 68556 in exponential form is:

68556 = 2² × 3¹ × 29¹ × 197¹

Step-3: Factors of 68540

List of positive integer factors of 68540 that divides 68540 without a remainder.

1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 149, 230, 298, 460, 596, 745, 1490, 2980, 3427, 6854, 13708, 17135, 34270

Step-4: Factors of 68556

List of positive integer factors of 68556 that divides 68540 without a remainder.

1, 2, 3, 4, 6, 12, 29, 58, 87, 116, 174, 197, 348, 394, 591, 788, 1182, 2364, 5713, 11426, 17139, 22852, 34278

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 68540 and 68556. The biggest common factor number is the GCF number.
So the greatest common factor 68540 and 68556 is 4.

Also check out the Least Common Multiple of 68540 and 68556