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What is the Greatest Common Factor of 21431 and 21445?

Greatest common factor (GCF) of 21431 and 21445 is 1.

GCF(21431,21445) = 1

We will now calculate the prime factors of 21431 and 21445, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 21431 and 21445.

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How to find the GCF of 21431 and 21445?

We will first find the prime factorization of 21431 and 21445. After we will calculate the factors of 21431 and 21445 and find the biggest common factor number .

Step-1: Prime Factorization of 21431

Prime factors of 21431 are 29, 739. Prime factorization of 21431 in exponential form is:

21431 = 291 × 7391

Step-2: Prime Factorization of 21445

Prime factors of 21445 are 5, 4289. Prime factorization of 21445 in exponential form is:

21445 = 51 × 42891

Step-3: Factors of 21431

List of positive integer factors of 21431 that divides 21431 without a remainder.

1, 29, 739

Step-4: Factors of 21445

List of positive integer factors of 21445 that divides 21431 without a remainder.

1, 5, 4289

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 21431 and 21445. The biggest common factor number is the GCF number.
So the greatest common factor 21431 and 21445 is 1.

Also check out the Least Common Multiple of 21431 and 21445