What is the Greatest Common Factor of 71970 and 71981?

Greatest common factor (GCF) of 71970 and 71981 is 1.

GCF(71970,71981) = 1

We will now calculate the prime factors of 71970 and 71981, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 71970 and 71981.

How to find the GCF of 71970 and 71981?

We will first find the prime factorization of 71970 and 71981. After we will calculate the factors of 71970 and 71981 and find the biggest common factor number .

Step-1: Prime Factorization of 71970

Prime factors of 71970 are 2, 3, 5, 2399. Prime factorization of 71970 in exponential form is:

71970 = 2¹ × 3¹ × 5¹ × 2399¹

Step-2: Prime Factorization of 71981

Prime factors of 71981 are 7, 13, 113. Prime factorization of 71981 in exponential form is:

71981 = 7² × 13¹ × 113¹

Step-3: Factors of 71970

List of positive integer factors of 71970 that divides 71970 without a remainder.

1, 2, 3, 5, 6, 10, 15, 30, 2399, 4798, 7197, 11995, 14394, 23990, 35985

Step-4: Factors of 71981

List of positive integer factors of 71981 that divides 71970 without a remainder.

1, 7, 13, 49, 91, 113, 637, 791, 1469, 5537, 10283

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 71970 and 71981. The biggest common factor number is the GCF number.
So the greatest common factor 71970 and 71981 is 1.

Also check out the Least Common Multiple of 71970 and 71981