What is the Greatest Common Factor of 68540 and 68558?

Greatest common factor (GCF) of 68540 and 68558 is 2.

GCF(68540,68558) = 2

We will now calculate the prime factors of 68540 and 68558, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 68540 and 68558.

How to find the GCF of 68540 and 68558?

We will first find the prime factorization of 68540 and 68558. After we will calculate the factors of 68540 and 68558 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 68558

Prime factors of 68558 are 2, 7, 59, 83. Prime factorization of 68558 in exponential form is:

68558 = 2¹ × 7¹ × 59¹ × 83¹

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 68558

List of positive integer factors of 68558 that divides 68540 without a remainder.

1, 2, 7, 14, 59, 83, 118, 166, 413, 581, 826, 1162, 4897, 9794, 34279

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 68540 and 68558. The biggest common factor number is the GCF number.
So the greatest common factor 68540 and 68558 is 2.

Also check out the Least Common Multiple of 68540 and 68558