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What is the Greatest Common Factor of 20860 and 20869?

Greatest common factor (GCF) of 20860 and 20869 is 1.

GCF(20860,20869) = 1

We will now calculate the prime factors of 20860 and 20869, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 20860 and 20869.

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How to find the GCF of 20860 and 20869?

We will first find the prime factorization of 20860 and 20869. After we will calculate the factors of 20860 and 20869 and find the biggest common factor number .

Step-1: Prime Factorization of 20860

Prime factors of 20860 are 2, 5, 7, 149. Prime factorization of 20860 in exponential form is:

20860 = 22 × 51 × 71 × 1491

Step-2: Prime Factorization of 20869

Prime factors of 20869 are 41, 509. Prime factorization of 20869 in exponential form is:

20869 = 411 × 5091

Step-3: Factors of 20860

List of positive integer factors of 20860 that divides 20860 without a remainder.

1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 149, 298, 596, 745, 1043, 1490, 2086, 2980, 4172, 5215, 10430

Step-4: Factors of 20869

List of positive integer factors of 20869 that divides 20860 without a remainder.

1, 41, 509

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 20860 and 20869. The biggest common factor number is the GCF number.
So the greatest common factor 20860 and 20869 is 1.

Also check out the Least Common Multiple of 20860 and 20869