What is the Greatest Common Factor of 42987 and 42999?

Greatest common factor (GCF) of 42987 and 42999 is 3.

GCF(42987,42999) = 3

We will now calculate the prime factors of 42987 and 42999, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 42987 and 42999.

How to find the GCF of 42987 and 42999?

We will first find the prime factorization of 42987 and 42999. After we will calculate the factors of 42987 and 42999 and find the biggest common factor number .

Step-1: Prime Factorization of 42987

Prime factors of 42987 are 3, 7, 23, 89. Prime factorization of 42987 in exponential form is:

42987 = 3¹ × 7¹ × 23¹ × 89¹

Step-2: Prime Factorization of 42999

Prime factors of 42999 are 3, 11, 1303. Prime factorization of 42999 in exponential form is:

42999 = 3¹ × 11¹ × 1303¹

Step-3: Factors of 42987

List of positive integer factors of 42987 that divides 42987 without a remainder.

1, 3, 7, 21, 23, 69, 89, 161, 267, 483, 623, 1869, 2047, 6141, 14329

Step-4: Factors of 42999

List of positive integer factors of 42999 that divides 42987 without a remainder.

1, 3, 11, 33, 1303, 3909, 14333

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 42987 and 42999. The biggest common factor number is the GCF number.
So the greatest common factor 42987 and 42999 is 3.

Also check out the Least Common Multiple of 42987 and 42999