What is the Greatest Common Factor of 81921 and 81925?

Greatest common factor (GCF) of 81921 and 81925 is 1.

GCF(81921,81925) = 1

We will now calculate the prime factors of 81921 and 81925, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 81921 and 81925.

How to find the GCF of 81921 and 81925?

We will first find the prime factorization of 81921 and 81925. After we will calculate the factors of 81921 and 81925 and find the biggest common factor number .

Step-1: Prime Factorization of 81921

Prime factors of 81921 are 3, 7, 47, 83. Prime factorization of 81921 in exponential form is:

81921 = 3¹ × 7¹ × 47¹ × 83¹

Step-2: Prime Factorization of 81925

Prime factors of 81925 are 5, 29, 113. Prime factorization of 81925 in exponential form is:

81925 = 5² × 29¹ × 113¹

Step-3: Factors of 81921

List of positive integer factors of 81921 that divides 81921 without a remainder.

1, 3, 7, 21, 47, 83, 141, 249, 329, 581, 987, 1743, 3901, 11703, 27307

Step-4: Factors of 81925

List of positive integer factors of 81925 that divides 81921 without a remainder.

1, 5, 25, 29, 113, 145, 565, 725, 2825, 3277, 16385

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 81921 and 81925. The biggest common factor number is the GCF number.
So the greatest common factor 81921 and 81925 is 1.

Also check out the Least Common Multiple of 81921 and 81925