What is the Greatest Common Factor of 90440 and 90455?

Greatest common factor (GCF) of 90440 and 90455 is 5.

GCF(90440,90455) = 5

We will now calculate the prime factors of 90440 and 90455, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 90440 and 90455.

How to find the GCF of 90440 and 90455?

We will first find the prime factorization of 90440 and 90455. After we will calculate the factors of 90440 and 90455 and find the biggest common factor number .

Step-1: Prime Factorization of 90440

Prime factors of 90440 are 2, 5, 7, 17, 19. Prime factorization of 90440 in exponential form is:

90440 = 2³ × 5¹ × 7¹ × 17¹ × 19¹

Step-2: Prime Factorization of 90455

Prime factors of 90455 are 5, 79, 229. Prime factorization of 90455 in exponential form is:

90455 = 5¹ × 79¹ × 229¹

Step-3: Factors of 90440

List of positive integer factors of 90440 that divides 90440 without a remainder.

1, 2, 4, 5, 7, 8, 10, 14, 17, 19, 20, 28, 34, 35, 38, 40, 56, 68, 70, 76, 85, 95, 119, 133, 136, 140, 152, 170, 190, 238, 266, 280, 323, 340, 380, 476, 532, 595, 646, 665, 680, 760, 952, 1064, 1190, 1292, 1330, 1615, 2261, 2380, 2584, 2660, 3230, 4522, 4760, 5320, 6460, 9044, 11305, 12920, 18088, 22610, 45220

Step-4: Factors of 90455

List of positive integer factors of 90455 that divides 90440 without a remainder.

1, 5, 79, 229, 395, 1145, 18091

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 90440 and 90455. The biggest common factor number is the GCF number.
So the greatest common factor 90440 and 90455 is 5.

Also check out the Least Common Multiple of 90440 and 90455