GCD of 247, 840, 670, 123 Calculator

Given Input numbers are 247, 840, 670, 123

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

Divisors of 247 :

The positive integer divisors of 247 that completely divides 247 are.

1, 13, 19, 247

Divisors of 840 :

The positive integer divisors of 840 that completely divides 840 are.

1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840

Divisors of 670 :

The positive integer divisors of 670 that completely divides 670 are.

1, 2, 5, 10, 67, 134, 335, 670

Divisors of 123 :

The positive integer divisors of 123 that completely divides 123 are.

1, 3, 41, 123

GCD of numbers is the greatest common divisor

So, the GCD (247, 840, 670, 123) = 1.

Given numbers are 247, 840, 670, 123

The list of prime factors of all numbers are

Prime factors of 247 are 13 x 19

Prime factors of 840 are 2 x 2 x 2 x 3 x 5 x 7

Prime factors of 670 are 2 x 5 x 67

Prime factors of 123 are 3 x 41

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

Given numbers are 247, 840, 670, 123

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

Apply this formula for all numbers.

Step1:

LCM(247, 840) = 207480

GCD(247, 840) = ( 247 x 840 ) / 207480

= 247 / 840

= 247

Step2:

LCM(1, 670) = 670

GCD(1, 670) = ( 1 x 670 ) / 670

= 1 / 670

= 1

Step3:

LCM(1, 123) = 123

GCD(1, 123) = ( 1 x 123 ) / 123

= 1 / 123

= 1

So, Greatest Common Divisor of 247, 840, 670, 123 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 448, 356, 467, 562
• GCD of 571, 193, 674, 513
• GCD of 448, 139, 882, 790
• GCD of 509, 694, 877, 677
• GCD of 549, 304, 695, 690

Given numbers are 247, 840, 670, 123
The greatest common divisor of numbers 247, 840, 670, 123 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 247, 840, 670, 123 is 1.

1. What is the GCD of 247, 840, 670, 123?

GCD of given numbers 247, 840, 670, 123 is 1

2. How to calculate the greatest common divisor of 247, 840, 670, 123?

We can find the highest common divisor of 247, 840, 670, 123 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 247, 840, 670, 123 i.e 1.

3. How can I use the GCD of 247, 840, 670, 123Calculator?

Out the numbers 247, 840, 670, 123 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.