What is the Greatest Common Factor of 30780 and 30799?

Greatest common factor (GCF) of 30780 and 30799 is 19.

GCF(30780,30799) = 19

We will now calculate the prime factors of 30780 and 30799, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 30780 and 30799.

How to find the GCF of 30780 and 30799?

We will first find the prime factorization of 30780 and 30799. After we will calculate the factors of 30780 and 30799 and find the biggest common factor number .

Step-1: Prime Factorization of 30780

Prime factors of 30780 are 2, 3, 5, 19. Prime factorization of 30780 in exponential form is:

30780 = 2² × 3⁴ × 5¹ × 19¹

Step-2: Prime Factorization of 30799

Prime factors of 30799 are 19, 1621. Prime factorization of 30799 in exponential form is:

30799 = 19¹ × 1621¹

Step-3: Factors of 30780

List of positive integer factors of 30780 that divides 30780 without a remainder.

1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 27, 30, 36, 38, 45, 54, 57, 60, 76, 81, 90, 95, 108, 114, 135, 162, 171, 180, 190, 228, 270, 285, 324, 342, 380, 405, 513, 540, 570, 684, 810, 855, 1026, 1140, 1539, 1620, 1710, 2052, 2565, 3078, 3420, 5130, 6156, 7695, 10260, 15390

Step-4: Factors of 30799

List of positive integer factors of 30799 that divides 30780 without a remainder.

1, 19, 1621

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 30780 and 30799. The biggest common factor number is the GCF number.
So the greatest common factor 30780 and 30799 is 19.

Also check out the Least Common Multiple of 30780 and 30799