Online GCD Calculator is useful to find the GCD of 721, 424, 662, 642 quickly. Get the easiest ways to solve the greatest common divisor of 721, 424, 662, 642 i.e 1 in different methods as follows.
Given Input numbers are 721, 424, 662, 642
In the factoring method, we have to find the divisors of all numbers
Divisors of 721 :
The positive integer divisors of 721 that completely divides 721 are.
1, 7, 103, 721
Divisors of 424 :
The positive integer divisors of 424 that completely divides 424 are.
1, 2, 4, 8, 53, 106, 212, 424
Divisors of 662 :
The positive integer divisors of 662 that completely divides 662 are.
1, 2, 331, 662
Divisors of 642 :
The positive integer divisors of 642 that completely divides 642 are.
1, 2, 3, 6, 107, 214, 321, 642
GCD of numbers is the greatest common divisor
So, the GCD (721, 424, 662, 642) = 1.
Given numbers are 721, 424, 662, 642
The list of prime factors of all numbers are
Prime factors of 721 are 7 x 103
Prime factors of 424 are 2 x 2 x 2 x 53
Prime factors of 662 are 2 x 331
Prime factors of 642 are 2 x 3 x 107
The above numbers do not have any common prime factor. So GCD is 1
Given numbers are 721, 424, 662, 642
GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)
Apply this formula for all numbers.
Step1:
LCM(721, 424) = 305704
GCD(721, 424) = ( 721 x 424 ) / 305704
= 721 / 424
= 721
Step2:
LCM(1, 662) = 662
GCD(1, 662) = ( 1 x 662 ) / 662
= 1 / 662
= 1
Step3:
LCM(1, 642) = 642
GCD(1, 642) = ( 1 x 642 ) / 642
= 1 / 642
= 1
So, Greatest Common Divisor of 721, 424, 662, 642 is 1
Here are some samples of GCD of Numbers calculations.
Given numbers are 721, 424, 662, 642
The greatest common divisor of numbers 721, 424, 662, 642 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 721, 424, 662, 642 is 1.
1. What is the GCD of 721, 424, 662, 642?
GCD of given numbers 721, 424, 662, 642 is 1
2. How to calculate the greatest common divisor of 721, 424, 662, 642?
We can find the highest common divisor of 721, 424, 662, 642 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 721, 424, 662, 642 i.e 1.
3. How can I use the GCD of 721, 424, 662, 642Calculator?
Out the numbers 721, 424, 662, 642 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.