You can use GeoGebra
to check if a number is prime, or to find prime numbers. This can be especially useful with large numbers where it can be difficult to figure out if they are prime or not.
GeoGebra
Instruction 1
Algebra View
under View
in Menu
. IsPrime(<Number>)
by typing it in Algebra View
and inserting your number in the <Number>
field.
If GeoGebra
returns true
, that means your number is a prime number.
If GeoGebra
returns false
, that means that your number is not a prime number.
PrimeFactors(<Number>)
to find the prime factors of your number.
GeoGebra
Instruction 2
Open Algebra View
under View
in Menu
.
If you have a number—no matter if it’s prime or not—and you want to find the closest prime number that is bigger than your number, use the command
NextPrime(<Number>).
If you have a number—no matter if it’s prime or not—and you want to find the closest prime number that is smaller than your number, use the command
PreviousPrime(<Number>).