GCD of 909, 242, 642, 690 Calculator

Given Input numbers are 909, 242, 642, 690

In the factoring method, we have to find the divisors of all numbers

Divisors of 909 :

The positive integer divisors of 909 that completely divides 909 are.

1, 3, 9, 101, 303, 909

Divisors of 242 :

The positive integer divisors of 242 that completely divides 242 are.

1, 2, 11, 22, 121, 242

Divisors of 642 :

The positive integer divisors of 642 that completely divides 642 are.

1, 2, 3, 6, 107, 214, 321, 642

Divisors of 690 :

The positive integer divisors of 690 that completely divides 690 are.

1, 2, 3, 5, 6, 10, 15, 23, 30, 46, 69, 115, 138, 230, 345, 690

GCD of numbers is the greatest common divisor

So, the GCD (909, 242, 642, 690) = 1.

Given numbers are 909, 242, 642, 690

The list of prime factors of all numbers are

Prime factors of 909 are 3 x 3 x 101

Prime factors of 242 are 2 x 11 x 11

Prime factors of 642 are 2 x 3 x 107

Prime factors of 690 are 2 x 3 x 5 x 23

The above numbers do not have any common prime factor. So GCD is 1

Given numbers are 909, 242, 642, 690

GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)

Apply this formula for all numbers.

Step1:

LCM(909, 242) = 219978

GCD(909, 242) = ( 909 x 242 ) / 219978

= 909 / 242

= 909

Step2:

LCM(1, 642) = 642

GCD(1, 642) = ( 1 x 642 ) / 642

= 1 / 642

= 1

Step3:

LCM(1, 690) = 690

GCD(1, 690) = ( 1 x 690 ) / 690

= 1 / 690

= 1

So, Greatest Common Divisor of 909, 242, 642, 690 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 346, 142, 919, 254
• GCD of 397, 806, 880, 788
• GCD of 308, 398, 731, 679
• GCD of 328, 592, 793, 830
• GCD of 208, 415, 503, 278

Given numbers are 909, 242, 642, 690
The greatest common divisor of numbers 909, 242, 642, 690 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 909, 242, 642, 690 is 1.

1. What is the GCD of 909, 242, 642, 690?

GCD of given numbers 909, 242, 642, 690 is 1

2. How to calculate the greatest common divisor of 909, 242, 642, 690?

We can find the highest common divisor of 909, 242, 642, 690 easily using the prime factorization method. Just list the prime factors of all numbers and pick the highest common factor which is the GCD of 909, 242, 642, 690 i.e 1.

3. How can I use the GCD of 909, 242, 642, 690Calculator?

Out the numbers 909, 242, 642, 690 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.