What is the Greatest Common Factor of 66440 and 66455?

Greatest common factor (GCF) of 66440 and 66455 is 5.

GCF(66440,66455) = 5

We will now calculate the prime factors of 66440 and 66455, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 66440 and 66455.

How to find the GCF of 66440 and 66455?

We will first find the prime factorization of 66440 and 66455. After we will calculate the factors of 66440 and 66455 and find the biggest common factor number .

Step-1: Prime Factorization of 66440

Prime factors of 66440 are 2, 5, 11, 151. Prime factorization of 66440 in exponential form is:

66440 = 2³ × 5¹ × 11¹ × 151¹

Step-2: Prime Factorization of 66455

Prime factors of 66455 are 5, 13291. Prime factorization of 66455 in exponential form is:

66455 = 5¹ × 13291¹

Step-3: Factors of 66440

List of positive integer factors of 66440 that divides 66440 without a remainder.

1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 151, 220, 302, 440, 604, 755, 1208, 1510, 1661, 3020, 3322, 6040, 6644, 8305, 13288, 16610, 33220

Step-4: Factors of 66455

List of positive integer factors of 66455 that divides 66440 without a remainder.

1, 5, 13291

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 66440 and 66455. The biggest common factor number is the GCF number.
So the greatest common factor 66440 and 66455 is 5.

Also check out the Least Common Multiple of 66440 and 66455