What is the Greatest Common Factor of 540 and 555?
Greatest common factor (GCF) of 540 and 555 is 15.
GCF(540,555) = 15
We will now calculate the prime factors of 540 and 555, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 540 and 555.
How to find the GCF of 540 and 555?
We will first find the prime factorization of 540 and 555. After we will calculate the factors of 540 and 555 and find the biggest common factor number .
Step-1: Prime Factorization of 540
Prime factors of 540 are 2, 3, 5. Prime factorization of 540 in exponential form is:
540 = 22 × 33 × 51
Step-2: Prime Factorization of 555
Prime factors of 555 are 3, 5, 37. Prime factorization of 555 in exponential form is:
555 = 31 × 51 × 371
Step-3: Factors of 540
List of positive integer factors of 540 that divides 540 without a remainder.
1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 90, 108, 135, 180, 270
Step-4: Factors of 555
List of positive integer factors of 555 that divides 540 without a remainder.
1, 3, 5, 15, 37, 111, 185
Final Step: Biggest Common Factor Number
We found the factors and prime factorization of 540 and 555. The biggest common factor number is the GCF number.
So the greatest common factor 540 and 555 is 15.
Also check out the Least Common Multiple of 540 and 555
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