What is the Greatest Common Factor of 78287 and 78305?

Greatest common factor (GCF) of 78287 and 78305 is 1.

GCF(78287,78305) = 1

We will now calculate the prime factors of 78287 and 78305, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 78287 and 78305.

How to find the GCF of 78287 and 78305?

We will first find the prime factorization of 78287 and 78305. After we will calculate the factors of 78287 and 78305 and find the biggest common factor number .

Step-1: Prime Factorization of 78287

Prime factors of 78287 are 11, 647. Prime factorization of 78287 in exponential form is:

78287 = 11² × 647¹

Step-2: Prime Factorization of 78305

Prime factors of 78305 are 5, 15661. Prime factorization of 78305 in exponential form is:

78305 = 5¹ × 15661¹

Step-3: Factors of 78287

List of positive integer factors of 78287 that divides 78287 without a remainder.

1, 11, 121, 647, 7117

Step-4: Factors of 78305

List of positive integer factors of 78305 that divides 78287 without a remainder.

1, 5, 15661

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 78287 and 78305. The biggest common factor number is the GCF number.
So the greatest common factor 78287 and 78305 is 1.

Also check out the Least Common Multiple of 78287 and 78305