What is the Greatest Common Factor of 981 and 985?
Greatest common factor (GCF) of 981 and 985 is 1.
GCF(981,985) = 1
We will now calculate the prime factors of 981 and 985, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 981 and 985.
How to find the GCF of 981 and 985?
We will first find the prime factorization of 981 and 985. After we will calculate the factors of 981 and 985 and find the biggest common factor number .
Step-1: Prime Factorization of 981
Prime factors of 981 are 3, 109. Prime factorization of 981 in exponential form is:
981 = 32 × 1091
Step-2: Prime Factorization of 985
Prime factors of 985 are 5, 197. Prime factorization of 985 in exponential form is:
985 = 51 × 1971
Step-3: Factors of 981
List of positive integer factors of 981 that divides 981 without a remainder.
1, 3, 9, 109, 327
Step-4: Factors of 985
List of positive integer factors of 985 that divides 981 without a remainder.
1, 5, 197
Final Step: Biggest Common Factor Number
We found the factors and prime factorization of 981 and 985. The biggest common factor number is the GCF number.
So the greatest common factor 981 and 985 is 1.
Also check out the Least Common Multiple of 981 and 985
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