What is the Greatest Common Factor of 1861 and 1870?

Greatest common factor (GCF) of 1861 and 1870 is 1.

GCF(1861,1870) = 1

We will now calculate the prime factors of 1861 and 1870, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 1861 and 1870.

How to find the GCF of 1861 and 1870?

We will first find the prime factorization of 1861 and 1870. After we will calculate the factors of 1861 and 1870 and find the biggest common factor number .

Step-1: Prime Factorization of 1861

Prime factors of 1861 are 1861. Prime factorization of 1861 in exponential form is:

1861 = 1861¹

Step-2: Prime Factorization of 1870

Prime factors of 1870 are 2, 5, 11, 17. Prime factorization of 1870 in exponential form is:

1870 = 2¹ × 5¹ × 11¹ × 17¹

Step-3: Factors of 1861

List of positive integer factors of 1861 that divides 1861 without a remainder.

Step-4: Factors of 1870

List of positive integer factors of 1870 that divides 1861 without a remainder.

1, 2, 5, 10, 11, 17, 22, 34, 55, 85, 110, 170, 187, 374, 935

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 1861 and 1870. The biggest common factor number is the GCF number.
So the greatest common factor 1861 and 1870 is 1.

Also check out the Least Common Multiple of 1861 and 1870