What is the Greatest Common Factor of 61978 and 61998?

Greatest common factor (GCF) of 61978 and 61998 is 2.

GCF(61978,61998) = 2

We will now calculate the prime factors of 61978 and 61998, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 61978 and 61998.

How to find the GCF of 61978 and 61998?

We will first find the prime factorization of 61978 and 61998. After we will calculate the factors of 61978 and 61998 and find the biggest common factor number .

Step-1: Prime Factorization of 61978

Prime factors of 61978 are 2, 7, 19, 233. Prime factorization of 61978 in exponential form is:

61978 = 2¹ × 7¹ × 19¹ × 233¹

Step-2: Prime Factorization of 61998

Prime factors of 61998 are 2, 3, 10333. Prime factorization of 61998 in exponential form is:

61998 = 2¹ × 3¹ × 10333¹

Step-3: Factors of 61978

List of positive integer factors of 61978 that divides 61978 without a remainder.

1, 2, 7, 14, 19, 38, 133, 233, 266, 466, 1631, 3262, 4427, 8854, 30989

Step-4: Factors of 61998

List of positive integer factors of 61998 that divides 61978 without a remainder.

1, 2, 3, 6, 10333, 20666, 30999

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 61978 and 61998. The biggest common factor number is the GCF number.
So the greatest common factor 61978 and 61998 is 2.

Also check out the Least Common Multiple of 61978 and 61998