What is the Greatest Common Factor of 70781 and 70785?

Greatest common factor (GCF) of 70781 and 70785 is 1.

GCF(70781,70785) = 1

We will now calculate the prime factors of 70781 and 70785, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 70781 and 70785.

How to find the GCF of 70781 and 70785?

We will first find the prime factorization of 70781 and 70785. After we will calculate the factors of 70781 and 70785 and find the biggest common factor number .

Step-1: Prime Factorization of 70781

Prime factors of 70781 are 37, 1913. Prime factorization of 70781 in exponential form is:

70781 = 37¹ × 1913¹

Step-2: Prime Factorization of 70785

Prime factors of 70785 are 3, 5, 11, 13. Prime factorization of 70785 in exponential form is:

70785 = 3² × 5¹ × 11² × 13¹

Step-3: Factors of 70781

List of positive integer factors of 70781 that divides 70781 without a remainder.

1, 37, 1913

Step-4: Factors of 70785

List of positive integer factors of 70785 that divides 70781 without a remainder.

1, 3, 5, 9, 11, 13, 15, 33, 39, 45, 55, 65, 99, 117, 121, 143, 165, 195, 363, 429, 495, 585, 605, 715, 1089, 1287, 1573, 1815, 2145, 4719, 5445, 6435, 7865, 14157, 23595

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 70781 and 70785. The biggest common factor number is the GCF number.
So the greatest common factor 70781 and 70785 is 1.

Also check out the Least Common Multiple of 70781 and 70785