What is the Greatest Common Factor of 66240 and 66257?

Greatest common factor (GCF) of 66240 and 66257 is 1.

GCF(66240,66257) = 1

We will now calculate the prime factors of 66240 and 66257, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 66240 and 66257.

How to find the GCF of 66240 and 66257?

We will first find the prime factorization of 66240 and 66257. After we will calculate the factors of 66240 and 66257 and find the biggest common factor number .

Step-1: Prime Factorization of 66240

Prime factors of 66240 are 2, 3, 5, 23. Prime factorization of 66240 in exponential form is:

66240 = 2⁶ × 3² × 5¹ × 23¹

Step-2: Prime Factorization of 66257

Prime factors of 66257 are 59, 1123. Prime factorization of 66257 in exponential form is:

66257 = 59¹ × 1123¹

Step-3: Factors of 66240

List of positive integer factors of 66240 that divides 66240 without a remainder.

1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 23, 24, 30, 32, 36, 40, 45, 46, 48, 60, 64, 69, 72, 80, 90, 92, 96, 115, 120, 138, 144, 160, 180, 184, 192, 207, 230, 240, 276, 288, 320, 345, 360, 368, 414, 460, 480, 552, 576, 690, 720, 736, 828, 920, 960, 1035, 1104, 1380, 1440, 1472, 1656, 1840, 2070, 2208, 2760, 2880, 3312, 3680, 4140, 4416, 5520, 6624, 7360, 8280, 11040, 13248, 16560, 22080, 33120

Step-4: Factors of 66257

List of positive integer factors of 66257 that divides 66240 without a remainder.

1, 59, 1123

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 66240 and 66257. The biggest common factor number is the GCF number.
So the greatest common factor 66240 and 66257 is 1.

Also check out the Least Common Multiple of 66240 and 66257