What is the Greatest Common Factor of 25978 and 25986?

Greatest common factor (GCF) of 25978 and 25986 is 2.

GCF(25978,25986) = 2

We will now calculate the prime factors of 25978 and 25986, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 25978 and 25986.

How to find the GCF of 25978 and 25986?

We will first find the prime factorization of 25978 and 25986. After we will calculate the factors of 25978 and 25986 and find the biggest common factor number .

Step-1: Prime Factorization of 25978

Prime factors of 25978 are 2, 31, 419. Prime factorization of 25978 in exponential form is:

25978 = 2¹ × 31¹ × 419¹

Step-2: Prime Factorization of 25986

Prime factors of 25986 are 2, 3, 61, 71. Prime factorization of 25986 in exponential form is:

25986 = 2¹ × 3¹ × 61¹ × 71¹

Step-3: Factors of 25978

List of positive integer factors of 25978 that divides 25978 without a remainder.

1, 2, 31, 62, 419, 838, 12989

Step-4: Factors of 25986

List of positive integer factors of 25986 that divides 25978 without a remainder.

1, 2, 3, 6, 61, 71, 122, 142, 183, 213, 366, 426, 4331, 8662, 12993

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 25978 and 25986. The biggest common factor number is the GCF number.
So the greatest common factor 25978 and 25986 is 2.

Also check out the Least Common Multiple of 25978 and 25986