What is the Greatest Common Factor of 1761 and 1780?

Greatest common factor (GCF) of 1761 and 1780 is 1.

GCF(1761,1780) = 1

We will now calculate the prime factors of 1761 and 1780, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 1761 and 1780.

How to find the GCF of 1761 and 1780?

We will first find the prime factorization of 1761 and 1780. After we will calculate the factors of 1761 and 1780 and find the biggest common factor number .

Step-1: Prime Factorization of 1761

Prime factors of 1761 are 3, 587. Prime factorization of 1761 in exponential form is:

1761 = 3¹ × 587¹

Step-2: Prime Factorization of 1780

Prime factors of 1780 are 2, 5, 89. Prime factorization of 1780 in exponential form is:

1780 = 2² × 5¹ × 89¹

Step-3: Factors of 1761

List of positive integer factors of 1761 that divides 1761 without a remainder.

1, 3, 587

Step-4: Factors of 1780

List of positive integer factors of 1780 that divides 1761 without a remainder.

1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 1761 and 1780. The biggest common factor number is the GCF number.
So the greatest common factor 1761 and 1780 is 1.

Also check out the Least Common Multiple of 1761 and 1780