Greatest Common Factor of 1243 and 1251

Created By : Jatin Gogia

Reviewed By : Rajasekhar Valipishetty

Last Updated : Apr 06, 2023

Make use of GCF Calculator to quickly find the Greatest Common Factor of numbers 1243, 1251 i.e. 1 largest integer by which both the numbers can be divided.

Greatest common factor (GCF) of 1243 and 1251 is 1.

GCF(1243,1251) = 1

GCF of 1243 and 1251

Greatest common factor or Greatest common divisor (GCD) can be calculated in following way;

GCF of:
and

Greatest Common Factor of 1243 and 1251

GCF of 1243 and 1251 is 1

Prime Factorization of 1243


11 1243
113 113
1

Prime factors of 1243 are 11,113. Prime factorization of 1243 in exponential form is:

1243 = 111×1131

Prime Factorization of 1251


3 1251
3 417
139 139
1

Prime factors of 1251 are 3,139. Prime factorization of 1251 in exponential form is:

1251 = 32×1391

∴ So by taking common prime factors GCF of 1243 and 1251 is 1

Greatest Common Factor of 1243 and 1251 by matching factors method

Factors of 1243

List of positive integer factors of 1243 that divides 1243 without a remainder.

1,11,113,1243

Factors of 1251

List of positive integer factors of 1251 that divides 1251 without a remainder.

1,3,9,139,417,1251

Greatest Common Factor

We found the factors and prime factorization of 1243 and 1251. The biggest common factor number is the GCF number.
So the greatest common factor 1243 and 1251 is 1.

Also check out the Least Common Multiple of 1243 and 1251

Properties of GCF 1243 and 1251

(i) The GCF of 1243 and 1251 is associative

GCF of 1243 and 1251 = GCF of 1251 and 1243

Related Greatest Common Factor of 1243

Related Greatest Common Factor of 1251

Frequently Asked Questions on GCF of 1243 and 1251

1. What is the GCF of 1243 and 1251?

Answer: GCF of 1243 and 1251 is 1.

2. What are the Factors of 1243?

Answer: Factors of 1243 are 1, 11, 113, 1243. There are 4 integers that are factors of 1243. The greatest factor of 1243 is 1243.

3. What are the Factors of 1251?

Answer: Factors of 1251 are 1, 3, 9, 139, 417, 1251. There are 6 integers that are factors of 1251. The greatest factor of 1251 is 1251.

4. How to Find the GCF of 1243 and 1251?

Answer:

Greatest Common Factor of 1243 and 1251 = 1

Step 1: Find the prime factorization of 1243

1243 = 11 x 113

Step 2: Find the prime factorization of 1251

1251 = 3 x 3 x 139

Step 3: Multiply those factors both numbers have in common in steps i) or ii) above to find the gcf:

GCF = = 1

Step 4: Therefore, the greatest common factor of 1243 and 1251 is 1