What is the Greatest Common Factor of 68490 and 68505?

Greatest common factor (GCF) of 68490 and 68505 is 15.

GCF(68490,68505) = 15

We will now calculate the prime factors of 68490 and 68505, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 68490 and 68505.

How to find the GCF of 68490 and 68505?

We will first find the prime factorization of 68490 and 68505. After we will calculate the factors of 68490 and 68505 and find the biggest common factor number .

Step-1: Prime Factorization of 68490

Prime factors of 68490 are 2, 3, 5, 761. Prime factorization of 68490 in exponential form is:

68490 = 2¹ × 3² × 5¹ × 761¹

Step-2: Prime Factorization of 68505

Prime factors of 68505 are 3, 5, 4567. Prime factorization of 68505 in exponential form is:

68505 = 3¹ × 5¹ × 4567¹

Step-3: Factors of 68490

List of positive integer factors of 68490 that divides 68490 without a remainder.

1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 761, 1522, 2283, 3805, 4566, 6849, 7610, 11415, 13698, 22830, 34245

Step-4: Factors of 68505

List of positive integer factors of 68505 that divides 68490 without a remainder.

1, 3, 5, 15, 4567, 13701, 22835

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 68490 and 68505. The biggest common factor number is the GCF number.
So the greatest common factor 68490 and 68505 is 15.

Also check out the Least Common Multiple of 68490 and 68505