What is the Greatest Common Factor of 1771 and 1781?

Greatest common factor (GCF) of 1771 and 1781 is 1.

GCF(1771,1781) = 1

We will now calculate the prime factors of 1771 and 1781, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 1771 and 1781.

How to find the GCF of 1771 and 1781?

We will first find the prime factorization of 1771 and 1781. After we will calculate the factors of 1771 and 1781 and find the biggest common factor number .

Step-1: Prime Factorization of 1771

Prime factors of 1771 are 7, 11, 23. Prime factorization of 1771 in exponential form is:

1771 = 7¹ × 11¹ × 23¹

Step-2: Prime Factorization of 1781

Prime factors of 1781 are 13, 137. Prime factorization of 1781 in exponential form is:

1781 = 13¹ × 137¹

Step-3: Factors of 1771

List of positive integer factors of 1771 that divides 1771 without a remainder.

1, 7, 11, 23, 77, 161, 253

Step-4: Factors of 1781

List of positive integer factors of 1781 that divides 1771 without a remainder.

1, 13, 137

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 1771 and 1781. The biggest common factor number is the GCF number.
So the greatest common factor 1771 and 1781 is 1.

Also check out the Least Common Multiple of 1771 and 1781