What is the Greatest Common Factor of 30721 and 30740?

Greatest common factor (GCF) of 30721 and 30740 is 1.

GCF(30721,30740) = 1

We will now calculate the prime factors of 30721 and 30740, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 30721 and 30740.

How to find the GCF of 30721 and 30740?

We will first find the prime factorization of 30721 and 30740. After we will calculate the factors of 30721 and 30740 and find the biggest common factor number .

Step-1: Prime Factorization of 30721

Prime factors of 30721 are 31, 991. Prime factorization of 30721 in exponential form is:

30721 = 31¹ × 991¹

Step-2: Prime Factorization of 30740

Prime factors of 30740 are 2, 5, 29, 53. Prime factorization of 30740 in exponential form is:

30740 = 2² × 5¹ × 29¹ × 53¹

Step-3: Factors of 30721

List of positive integer factors of 30721 that divides 30721 without a remainder.

1, 31, 991

Step-4: Factors of 30740

List of positive integer factors of 30740 that divides 30721 without a remainder.

1, 2, 4, 5, 10, 20, 29, 53, 58, 106, 116, 145, 212, 265, 290, 530, 580, 1060, 1537, 3074, 6148, 7685, 15370

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 30721 and 30740. The biggest common factor number is the GCF number.
So the greatest common factor 30721 and 30740 is 1.

Also check out the Least Common Multiple of 30721 and 30740