What is the Greatest Common Factor of 3905 and 3913?

Greatest common factor (GCF) of 3905 and 3913 is 1.

GCF(3905,3913) = 1

We will now calculate the prime factors of 3905 and 3913, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 3905 and 3913.

How to find the GCF of 3905 and 3913?

We will first find the prime factorization of 3905 and 3913. After we will calculate the factors of 3905 and 3913 and find the biggest common factor number .

Step-1: Prime Factorization of 3905

Prime factors of 3905 are 5, 11, 71. Prime factorization of 3905 in exponential form is:

3905 = 5¹ × 11¹ × 71¹

Step-2: Prime Factorization of 3913

Prime factors of 3913 are 7, 13, 43. Prime factorization of 3913 in exponential form is:

3913 = 7¹ × 13¹ × 43¹

Step-3: Factors of 3905

List of positive integer factors of 3905 that divides 3905 without a remainder.

1, 5, 11, 55, 71, 355, 781

Step-4: Factors of 3913

List of positive integer factors of 3913 that divides 3905 without a remainder.

1, 7, 13, 43, 91, 301, 559

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 3905 and 3913. The biggest common factor number is the GCF number.
So the greatest common factor 3905 and 3913 is 1.

Also check out the Least Common Multiple of 3905 and 3913