What is the Greatest Common Factor of 20449 and 20455?

Greatest common factor (GCF) of 20449 and 20455 is 1.

GCF(20449,20455) = 1

We will now calculate the prime factors of 20449 and 20455, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 20449 and 20455.

How to find the GCF of 20449 and 20455?

We will first find the prime factorization of 20449 and 20455. After we will calculate the factors of 20449 and 20455 and find the biggest common factor number .

Step-1: Prime Factorization of 20449

Prime factors of 20449 are 11, 13. Prime factorization of 20449 in exponential form is:

20449 = 11² × 13²

Step-2: Prime Factorization of 20455

Prime factors of 20455 are 5, 4091. Prime factorization of 20455 in exponential form is:

20455 = 5¹ × 4091¹

Step-3: Factors of 20449

List of positive integer factors of 20449 that divides 20449 without a remainder.

1, 11, 13, 121, 143, 169, 1573, 1859

Step-4: Factors of 20455

List of positive integer factors of 20455 that divides 20449 without a remainder.

1, 5, 4091

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 20449 and 20455. The biggest common factor number is the GCF number.
So the greatest common factor 20449 and 20455 is 1.

Also check out the Least Common Multiple of 20449 and 20455