What is the Greatest Common Factor of 30861 and 30878?

Greatest common factor (GCF) of 30861 and 30878 is 1.

GCF(30861,30878) = 1

We will now calculate the prime factors of 30861 and 30878, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 30861 and 30878.

How to find the GCF of 30861 and 30878?

We will first find the prime factorization of 30861 and 30878. After we will calculate the factors of 30861 and 30878 and find the biggest common factor number .

Step-1: Prime Factorization of 30861

Prime factors of 30861 are 3, 127. Prime factorization of 30861 in exponential form is:

30861 = 3⁵ × 127¹

Step-2: Prime Factorization of 30878

Prime factors of 30878 are 2, 15439. Prime factorization of 30878 in exponential form is:

30878 = 2¹ × 15439¹

Step-3: Factors of 30861

List of positive integer factors of 30861 that divides 30861 without a remainder.

1, 3, 9, 27, 81, 127, 243, 381, 1143, 3429, 10287

Step-4: Factors of 30878

List of positive integer factors of 30878 that divides 30861 without a remainder.

1, 2, 15439

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 30861 and 30878. The biggest common factor number is the GCF number.
So the greatest common factor 30861 and 30878 is 1.

Also check out the Least Common Multiple of 30861 and 30878