This snake can only grow by eating prime number apples.
Eating a nonprime number apple will shrink it!
Guide it with the arrows on your keyboard.
A prime number is an integer greater than 1 that is a multiple of only 1 and itself.
For example, 2, 3, 5, 7 and 11 are prime, but 15 is not prime because it is a multiple of 3 and 5.
An even number is a multiple of 2.
If the last digit of a number is 5 or 0, then this number is a multiple of 5.
If the sum of the digits of a number is a multiple of 3, then this number is a multiple of 3, and consequently not prime. For example 123 is a multiple of 3 because 1 + 2 + 3 = 6 is a multiple of 3.
You can find those rules and more here: https://en.wikipedia.org/wiki/Divisibility_rule, or you can learn all the prime numbers between 2 and 1000. ;-)
We wanted to create a simple game that is both math-oriented and entertaining.
A prime number is an integer greater than 1 that has no positive divisors other than 1 and itself.
This game tests the use of simple rules to quickly find if a number is prime or composite.
A suggestion for improvement, a bug to report?
Do not hesitate to contact us: email@example.com