What is the Greatest Common Factor of 78890 and 78902?

Greatest common factor (GCF) of 78890 and 78902 is 2.

GCF(78890,78902) = 2

We will now calculate the prime factors of 78890 and 78902, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 78890 and 78902.

How to find the GCF of 78890 and 78902?

We will first find the prime factorization of 78890 and 78902. After we will calculate the factors of 78890 and 78902 and find the biggest common factor number .

Step-1: Prime Factorization of 78890

Prime factors of 78890 are 2, 5, 7, 23. Prime factorization of 78890 in exponential form is:

78890 = 2¹ × 5¹ × 7³ × 23¹

Step-2: Prime Factorization of 78902

Prime factors of 78902 are 2, 39451. Prime factorization of 78902 in exponential form is:

78902 = 2¹ × 39451¹

Step-3: Factors of 78890

List of positive integer factors of 78890 that divides 78890 without a remainder.

1, 2, 5, 7, 10, 14, 23, 35, 46, 49, 70, 98, 115, 161, 230, 245, 322, 343, 490, 686, 805, 1127, 1610, 1715, 2254, 3430, 5635, 7889, 11270, 15778, 39445

Step-4: Factors of 78902

List of positive integer factors of 78902 that divides 78890 without a remainder.

1, 2, 39451

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 78890 and 78902. The biggest common factor number is the GCF number.
So the greatest common factor 78890 and 78902 is 2.

Also check out the Least Common Multiple of 78890 and 78902