What is the Greatest Common Factor of 78040 and 78045?

Greatest common factor (GCF) of 78040 and 78045 is 5.

GCF(78040,78045) = 5

We will now calculate the prime factors of 78040 and 78045, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 78040 and 78045.

How to find the GCF of 78040 and 78045?

We will first find the prime factorization of 78040 and 78045. After we will calculate the factors of 78040 and 78045 and find the biggest common factor number .

Step-1: Prime Factorization of 78040

Prime factors of 78040 are 2, 5, 1951. Prime factorization of 78040 in exponential form is:

78040 = 2³ × 5¹ × 1951¹

Step-2: Prime Factorization of 78045

Prime factors of 78045 are 3, 5, 11, 43. Prime factorization of 78045 in exponential form is:

78045 = 3¹ × 5¹ × 11² × 43¹

Step-3: Factors of 78040

List of positive integer factors of 78040 that divides 78040 without a remainder.

1, 2, 4, 5, 8, 10, 20, 40, 1951, 3902, 7804, 9755, 15608, 19510, 39020

Step-4: Factors of 78045

List of positive integer factors of 78045 that divides 78040 without a remainder.

1, 3, 5, 11, 15, 33, 43, 55, 121, 129, 165, 215, 363, 473, 605, 645, 1419, 1815, 2365, 5203, 7095, 15609, 26015

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 78040 and 78045. The biggest common factor number is the GCF number.
So the greatest common factor 78040 and 78045 is 5.

Also check out the Least Common Multiple of 78040 and 78045