What is the Greatest Common Factor of 805 and 817?

Greatest common factor (GCF) of 805 and 817 is 1.

GCF(805,817) = 1

We will now calculate the prime factors of 805 and 817, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 805 and 817.

How to find the GCF of 805 and 817?

We will first find the prime factorization of 805 and 817. After we will calculate the factors of 805 and 817 and find the biggest common factor number .

Step-1: Prime Factorization of 805

Prime factors of 805 are 5, 7, 23. Prime factorization of 805 in exponential form is:

805 = 5¹ × 7¹ × 23¹

Step-2: Prime Factorization of 817

Prime factors of 817 are 19, 43. Prime factorization of 817 in exponential form is:

817 = 19¹ × 43¹

Step-3: Factors of 805

List of positive integer factors of 805 that divides 805 without a remainder.

1, 5, 7, 23, 35, 115, 161

Step-4: Factors of 817

List of positive integer factors of 817 that divides 805 without a remainder.

1, 19, 43

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 805 and 817. The biggest common factor number is the GCF number.
So the greatest common factor 805 and 817 is 1.

Also check out the Least Common Multiple of 805 and 817