What is the Greatest Common Factor of 961 and 980?
Greatest common factor (GCF) of 961 and 980 is 1.
GCF(961,980) = 1
We will now calculate the prime factors of 961 and 980, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 961 and 980.
How to find the GCF of 961 and 980?
We will first find the prime factorization of 961 and 980. After we will calculate the factors of 961 and 980 and find the biggest common factor number .
Step-1: Prime Factorization of 961
Prime factors of 961 are 31. Prime factorization of 961 in exponential form is:
961 = 312
Step-2: Prime Factorization of 980
Prime factors of 980 are 2, 5, 7. Prime factorization of 980 in exponential form is:
980 = 22 × 51 × 72
Step-3: Factors of 961
List of positive integer factors of 961 that divides 961 without a remainder.
1, 31
Step-4: Factors of 980
List of positive integer factors of 980 that divides 961 without a remainder.
1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490
Final Step: Biggest Common Factor Number
We found the factors and prime factorization of 961 and 980. The biggest common factor number is the GCF number.
So the greatest common factor 961 and 980 is 1.
Also check out the Least Common Multiple of 961 and 980
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