What is the Greatest Common Factor of 2128 and 2145?

Greatest common factor (GCF) of 2128 and 2145 is 1.

GCF(2128,2145) = 1

We will now calculate the prime factors of 2128 and 2145, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 2128 and 2145.

How to find the GCF of 2128 and 2145?

We will first find the prime factorization of 2128 and 2145. After we will calculate the factors of 2128 and 2145 and find the biggest common factor number .

Step-1: Prime Factorization of 2128

Prime factors of 2128 are 2, 7, 19. Prime factorization of 2128 in exponential form is:

2128 = 2⁴ × 7¹ × 19¹

Step-2: Prime Factorization of 2145

Prime factors of 2145 are 3, 5, 11, 13. Prime factorization of 2145 in exponential form is:

2145 = 3¹ × 5¹ × 11¹ × 13¹

Step-3: Factors of 2128

List of positive integer factors of 2128 that divides 2128 without a remainder.

1, 2, 4, 7, 8, 14, 16, 19, 28, 38, 56, 76, 112, 133, 152, 266, 304, 532, 1064

Step-4: Factors of 2145

List of positive integer factors of 2145 that divides 2128 without a remainder.

1, 3, 5, 11, 13, 15, 33, 39, 55, 65, 143, 165, 195, 429, 715

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 2128 and 2145. The biggest common factor number is the GCF number.
So the greatest common factor 2128 and 2145 is 1.

Also check out the Least Common Multiple of 2128 and 2145