What is the Greatest Common Factor of 21281 and 21290?
Greatest common factor (GCF) of 21281 and 21290 is 1.
GCF(21281,21290) = 1
We will now calculate the prime factors of 21281 and 21290, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 21281 and 21290.
How to find the GCF of 21281 and 21290?
We will first find the prime factorization of 21281 and 21290. After we will calculate the factors of 21281 and 21290 and find the biggest common factor number .
Step-1: Prime Factorization of 21281
Prime factors of 21281 are 13, 1637. Prime factorization of 21281 in exponential form is:
21281 = 131 × 16371
Step-2: Prime Factorization of 21290
Prime factors of 21290 are 2, 5, 2129. Prime factorization of 21290 in exponential form is:
21290 = 21 × 51 × 21291
Step-3: Factors of 21281
List of positive integer factors of 21281 that divides 21281 without a remainder.
1, 13, 1637
Step-4: Factors of 21290
List of positive integer factors of 21290 that divides 21281 without a remainder.
1, 2, 5, 10, 2129, 4258, 10645
Final Step: Biggest Common Factor Number
We found the factors and prime factorization of 21281 and 21290. The biggest common factor number is the GCF number.
So the greatest common factor 21281 and 21290 is 1.
Also check out the Least Common Multiple of 21281 and 21290
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Related Greatest Common Factors of 21290
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