What is the Greatest Common Factor of 71961 and 71978?

Greatest common factor (GCF) of 71961 and 71978 is 17.

GCF(71961,71978) = 17

We will now calculate the prime factors of 71961 and 71978, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 71961 and 71978.

How to find the GCF of 71961 and 71978?

We will first find the prime factorization of 71961 and 71978. After we will calculate the factors of 71961 and 71978 and find the biggest common factor number .

Step-1: Prime Factorization of 71961

Prime factors of 71961 are 3, 17, 83. Prime factorization of 71961 in exponential form is:

71961 = 3¹ × 17² × 83¹

Step-2: Prime Factorization of 71978

Prime factors of 71978 are 2, 17, 29, 73. Prime factorization of 71978 in exponential form is:

71978 = 2¹ × 17¹ × 29¹ × 73¹

Step-3: Factors of 71961

List of positive integer factors of 71961 that divides 71961 without a remainder.

1, 3, 17, 51, 83, 249, 289, 867, 1411, 4233, 23987

Step-4: Factors of 71978

List of positive integer factors of 71978 that divides 71961 without a remainder.

1, 2, 17, 29, 34, 58, 73, 146, 493, 986, 1241, 2117, 2482, 4234, 35989

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 71961 and 71978. The biggest common factor number is the GCF number.
So the greatest common factor 71961 and 71978 is 17.

Also check out the Least Common Multiple of 71961 and 71978