Greatest Common Factor of 1286 and 1290

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 1286, 1290 i.e. 2 largest integer by which both the numbers can be divided.

Greatest common factor (GCF) of 1286 and 1290 is 2.

GCF(1286,1290) = 2

GCF of 1286 and 1290

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

GCF of:
and

Greatest Common Factor of 1286 and 1290

GCF of 1286 and 1290 is 2

Prime Factorization of 1286


2 1286
643 643
1

Prime factors of 1286 are 2,643. Prime factorization of 1286 in exponential form is:

1286 = 21×6431

Prime Factorization of 1290


2 1290
3 645
5 215
43 43
1

Prime factors of 1290 are 2,3,5,43. Prime factorization of 1290 in exponential form is:

1290 = 21×31×51×431

∴ So by taking common prime factors GCF of 1286 and 1290 is 2

Greatest Common Factor of 1286 and 1290 by matching factors method

Factors of 1286

List of positive integer factors of 1286 that divides 1286 without a remainder.

1,2,643,1286

Factors of 1290

List of positive integer factors of 1290 that divides 1290 without a remainder.

1,2,3,5,6,10,15,30,43,86,129,215,258,430,645,1290

Greatest Common Factor

We found the factors and prime factorization of 1286 and 1290. The biggest common factor number is the GCF number.
So the greatest common factor 1286 and 1290 is 2.

Also check out the Least Common Multiple of 1286 and 1290

Properties of GCF 1286 and 1290

(i) The GCF of 1286 and 1290 is associative

GCF of 1286 and 1290 = GCF of 1290 and 1286

Related Greatest Common Factor of 1286

Related Greatest Common Factor of 1290

Frequently Asked Questions on GCF of 1286 and 1290

1. What is the GCF of 1286 and 1290?

Answer: GCF of 1286 and 1290 is 2.

2. What are the Factors of 1286?

Answer: Factors of 1286 are 1, 2, 643, 1286. There are 4 integers that are factors of 1286. The greatest factor of 1286 is 1286.

3. What are the Factors of 1290?

Answer: Factors of 1290 are 1, 2, 3, 5, 6, 10, 15, 30, 43, 86, 129, 215, 258, 430, 645, 1290. There are 16 integers that are factors of 1290. The greatest factor of 1290 is 1290.

4. How to Find the GCF of 1286 and 1290?

Answer:

Greatest Common Factor of 1286 and 1290 = 2

Step 1: Find the prime factorization of 1286

1286 = 2 x 643

Step 2: Find the prime factorization of 1290

1290 = 2 x 3 x 5 x 43

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

GCF = 2

Step 4: Therefore, the greatest common factor of 1286 and 1290 is 2