What is the Greatest Common Factor of 30705 and 30721?

Greatest common factor (GCF) of 30705 and 30721 is 1.

GCF(30705,30721) = 1

We will now calculate the prime factors of 30705 and 30721, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 30705 and 30721.

How to find the GCF of 30705 and 30721?

We will first find the prime factorization of 30705 and 30721. After we will calculate the factors of 30705 and 30721 and find the biggest common factor number .

Step-1: Prime Factorization of 30705

Prime factors of 30705 are 3, 5, 23, 89. Prime factorization of 30705 in exponential form is:

30705 = 3¹ × 5¹ × 23¹ × 89¹

Step-2: Prime Factorization of 30721

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

30721 = 31¹ × 991¹

Step-3: Factors of 30705

List of positive integer factors of 30705 that divides 30705 without a remainder.

1, 3, 5, 15, 23, 69, 89, 115, 267, 345, 445, 1335, 2047, 6141, 10235

Step-4: Factors of 30721

List of positive integer factors of 30721 that divides 30705 without a remainder.

1, 31, 991

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 30705 and 30721. The biggest common factor number is the GCF number.
So the greatest common factor 30705 and 30721 is 1.

Also check out the Least Common Multiple of 30705 and 30721