What is the Greatest Common Factor of 18515 and 18531?

Greatest common factor (GCF) of 18515 and 18531 is 1.

GCF(18515,18531) = 1

We will now calculate the prime factors of 18515 and 18531, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 18515 and 18531.

How to find the GCF of 18515 and 18531?

We will first find the prime factorization of 18515 and 18531. After we will calculate the factors of 18515 and 18531 and find the biggest common factor number .

Step-1: Prime Factorization of 18515

Prime factors of 18515 are 5, 7, 23. Prime factorization of 18515 in exponential form is:

18515 = 5¹ × 7¹ × 23²

Step-2: Prime Factorization of 18531

Prime factors of 18531 are 3, 29, 71. Prime factorization of 18531 in exponential form is:

18531 = 3² × 29¹ × 71¹

Step-3: Factors of 18515

List of positive integer factors of 18515 that divides 18515 without a remainder.

1, 5, 7, 23, 35, 115, 161, 529, 805, 2645, 3703

Step-4: Factors of 18531

List of positive integer factors of 18531 that divides 18515 without a remainder.

1, 3, 9, 29, 71, 87, 213, 261, 639, 2059, 6177

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 18515 and 18531. The biggest common factor number is the GCF number.
So the greatest common factor 18515 and 18531 is 1.

Also check out the Least Common Multiple of 18515 and 18531