What is the Greatest Common Factor of 987 and 997?
Greatest common factor (GCF) of 987 and 997 is 1.
GCF(987,997) = 1
We will now calculate the prime factors of 987 and 997, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 987 and 997.
How to find the GCF of 987 and 997?
We will first find the prime factorization of 987 and 997. After we will calculate the factors of 987 and 997 and find the biggest common factor number .
Step-1: Prime Factorization of 987
Prime factors of 987 are 3, 7, 47. Prime factorization of 987 in exponential form is:
987 = 31 × 71 × 471
Step-2: Prime Factorization of 997
Prime factors of 997 are 997. Prime factorization of 997 in exponential form is:
997 = 9971
Step-3: Factors of 987
List of positive integer factors of 987 that divides 987 without a remainder.
1, 3, 7, 21, 47, 141, 329
Step-4: Factors of 997
List of positive integer factors of 997 that divides 987 without a remainder.
1
Final Step: Biggest Common Factor Number
We found the factors and prime factorization of 987 and 997. The biggest common factor number is the GCF number.
So the greatest common factor 987 and 997 is 1.
Also check out the Least Common Multiple of 987 and 997
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