What is the Greatest Common Factor of 770 and 777?
Greatest common factor (GCF) of 770 and 777 is 7.
GCF(770,777) = 7
We will now calculate the prime factors of 770 and 777, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 770 and 777.
How to find the GCF of 770 and 777?
We will first find the prime factorization of 770 and 777. After we will calculate the factors of 770 and 777 and find the biggest common factor number .
Step-1: Prime Factorization of 770
Prime factors of 770 are 2, 5, 7, 11. Prime factorization of 770 in exponential form is:
770 = 21 × 51 × 71 × 111
Step-2: Prime Factorization of 777
Prime factors of 777 are 3, 7, 37. Prime factorization of 777 in exponential form is:
777 = 31 × 71 × 371
Step-3: Factors of 770
List of positive integer factors of 770 that divides 770 without a remainder.
1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 70, 77, 110, 154, 385
Step-4: Factors of 777
List of positive integer factors of 777 that divides 770 without a remainder.
1, 3, 7, 21, 37, 111, 259
Final Step: Biggest Common Factor Number
We found the factors and prime factorization of 770 and 777. The biggest common factor number is the GCF number.
So the greatest common factor 770 and 777 is 7.
Also check out the Least Common Multiple of 770 and 777
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