What is the Greatest Common Factor of 2440 and 2458?

Greatest common factor (GCF) of 2440 and 2458 is 2.

GCF(2440,2458) = 2

We will now calculate the prime factors of 2440 and 2458, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 2440 and 2458.

How to find the GCF of 2440 and 2458?

We will first find the prime factorization of 2440 and 2458. After we will calculate the factors of 2440 and 2458 and find the biggest common factor number .

Step-1: Prime Factorization of 2440

Prime factors of 2440 are 2, 5, 61. Prime factorization of 2440 in exponential form is:

2440 = 2³ × 5¹ × 61¹

Step-2: Prime Factorization of 2458

Prime factors of 2458 are 2, 1229. Prime factorization of 2458 in exponential form is:

2458 = 2¹ × 1229¹

Step-3: Factors of 2440

List of positive integer factors of 2440 that divides 2440 without a remainder.

1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220

Step-4: Factors of 2458

List of positive integer factors of 2458 that divides 2440 without a remainder.

1, 2, 1229

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 2440 and 2458. The biggest common factor number is the GCF number.
So the greatest common factor 2440 and 2458 is 2.

Also check out the Least Common Multiple of 2440 and 2458