What is the Greatest Common Factor of 243 and 247?
Greatest common factor (GCF) of 243 and 247 is 1.
GCF(243,247) = 1
We will now calculate the prime factors of 243 and 247, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 243 and 247.
How to find the GCF of 243 and 247?
We will first find the prime factorization of 243 and 247. After we will calculate the factors of 243 and 247 and find the biggest common factor number .
Step-1: Prime Factorization of 243
Prime factors of 243 are 3. Prime factorization of 243 in exponential form is:
243 = 35
Step-2: Prime Factorization of 247
Prime factors of 247 are 13, 19. Prime factorization of 247 in exponential form is:
247 = 131 × 191
Step-3: Factors of 243
List of positive integer factors of 243 that divides 243 without a remainder.
1, 3, 9, 27, 81
Step-4: Factors of 247
List of positive integer factors of 247 that divides 243 without a remainder.
1, 13, 19
Final Step: Biggest Common Factor Number
We found the factors and prime factorization of 243 and 247. The biggest common factor number is the GCF number.
So the greatest common factor 243 and 247 is 1.
Also check out the Least Common Multiple of 243 and 247
Related Greatest Common Factors of 243
- GCF of 243 and 247
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Related Greatest Common Factors of 247
- GCF of 247 and 251
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