What is the Greatest Common Factor of 66390 and 66402?

Greatest common factor (GCF) of 66390 and 66402 is 6.

GCF(66390,66402) = 6

We will now calculate the prime factors of 66390 and 66402, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 66390 and 66402.

How to find the GCF of 66390 and 66402?

We will first find the prime factorization of 66390 and 66402. After we will calculate the factors of 66390 and 66402 and find the biggest common factor number .

Step-1: Prime Factorization of 66390

Prime factors of 66390 are 2, 3, 5, 2213. Prime factorization of 66390 in exponential form is:

66390 = 2¹ × 3¹ × 5¹ × 2213¹

Step-2: Prime Factorization of 66402

Prime factors of 66402 are 2, 3, 7, 17, 31. Prime factorization of 66402 in exponential form is:

66402 = 2¹ × 3² × 7¹ × 17¹ × 31¹

Step-3: Factors of 66390

List of positive integer factors of 66390 that divides 66390 without a remainder.

1, 2, 3, 5, 6, 10, 15, 30, 2213, 4426, 6639, 11065, 13278, 22130, 33195

Step-4: Factors of 66402

List of positive integer factors of 66402 that divides 66390 without a remainder.

1, 2, 3, 6, 7, 9, 14, 17, 18, 21, 31, 34, 42, 51, 62, 63, 93, 102, 119, 126, 153, 186, 217, 238, 279, 306, 357, 434, 527, 558, 651, 714, 1054, 1071, 1302, 1581, 1953, 2142, 3162, 3689, 3906, 4743, 7378, 9486, 11067, 22134, 33201

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 66390 and 66402. The biggest common factor number is the GCF number.
So the greatest common factor 66390 and 66402 is 6.

Also check out the Least Common Multiple of 66390 and 66402