What is the Greatest Common Factor of 248 and 253?

Greatest common factor (GCF) of 248 and 253 is 1.

GCF(248,253) = 1

We will now calculate the prime factors of 248 and 253, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 248 and 253.

How to find the GCF of 248 and 253?

We will first find the prime factorization of 248 and 253. After we will calculate the factors of 248 and 253 and find the biggest common factor number .

Step-1: Prime Factorization of 248

Prime factors of 248 are 2, 31. Prime factorization of 248 in exponential form is:

248 = 2³ × 31¹

Step-2: Prime Factorization of 253

Prime factors of 253 are 11, 23. Prime factorization of 253 in exponential form is:

253 = 11¹ × 23¹

Step-3: Factors of 248

List of positive integer factors of 248 that divides 248 without a remainder.

1, 2, 4, 8, 31, 62, 124

Step-4: Factors of 253

List of positive integer factors of 253 that divides 248 without a remainder.

1, 11, 23

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 248 and 253. The biggest common factor number is the GCF number.
So the greatest common factor 248 and 253 is 1.

Also check out the Least Common Multiple of 248 and 253