What is the Greatest Common Factor of 1477 and 1485?

Greatest common factor (GCF) of 1477 and 1485 is 1.

GCF(1477,1485) = 1

We will now calculate the prime factors of 1477 and 1485, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 1477 and 1485.

How to find the GCF of 1477 and 1485?

We will first find the prime factorization of 1477 and 1485. After we will calculate the factors of 1477 and 1485 and find the biggest common factor number .

Step-1: Prime Factorization of 1477

Prime factors of 1477 are 7, 211. Prime factorization of 1477 in exponential form is:

1477 = 7¹ × 211¹

Step-2: Prime Factorization of 1485

Prime factors of 1485 are 3, 5, 11. Prime factorization of 1485 in exponential form is:

1485 = 3³ × 5¹ × 11¹

Step-3: Factors of 1477

List of positive integer factors of 1477 that divides 1477 without a remainder.

1, 7, 211

Step-4: Factors of 1485

List of positive integer factors of 1485 that divides 1477 without a remainder.

1, 3, 5, 9, 11, 15, 27, 33, 45, 55, 99, 135, 165, 297, 495

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 1477 and 1485. The biggest common factor number is the GCF number.
So the greatest common factor 1477 and 1485 is 1.

Also check out the Least Common Multiple of 1477 and 1485