What is the Greatest Common Factor of 1729 and 1745?

Greatest common factor (GCF) of 1729 and 1745 is 1.

GCF(1729,1745) = 1

We will now calculate the prime factors of 1729 and 1745, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 1729 and 1745.

How to find the GCF of 1729 and 1745?

We will first find the prime factorization of 1729 and 1745. After we will calculate the factors of 1729 and 1745 and find the biggest common factor number .

Step-1: Prime Factorization of 1729

Prime factors of 1729 are 7, 13, 19. Prime factorization of 1729 in exponential form is:

1729 = 7¹ × 13¹ × 19¹

Step-2: Prime Factorization of 1745

Prime factors of 1745 are 5, 349. Prime factorization of 1745 in exponential form is:

1745 = 5¹ × 349¹

Step-3: Factors of 1729

List of positive integer factors of 1729 that divides 1729 without a remainder.

1, 7, 13, 19, 91, 133, 247

Step-4: Factors of 1745

List of positive integer factors of 1745 that divides 1729 without a remainder.

1, 5, 349

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 1729 and 1745. The biggest common factor number is the GCF number.
So the greatest common factor 1729 and 1745 is 1.

Also check out the Least Common Multiple of 1729 and 1745