# Prime number game

You have 80 seconds to see how many exercises you can get correctly in 80 seconds

How to play

If the number is prime, enter "1" in the answer box.

If the number is not prime, enter "0" in the answer box.

By definition 1 is neither prime nor composite, so as you play the game, it will not prompt you to answer for 1.

Now why 1 is neither prime nor composite?

By definition, a number is prime if it has only two factors

By definition, a number is composite if it has more than 2 factors

Since 1 has only one factor, which is itself, the definition for prime or composite does not apply

Time left:

is   a prime number?

Easy Moderate Difficult

You got:    points

Here is my guideline to verify how well you are doing:

Easy and 1-20 points in 80 seconds: Very well, keep up!

Easy and 20-30 points in 80 seconds: good!

Easy and more than 30 points in 80 seconds: Expert!

Moderate and 1-15 points in 80 seconds: Very well, keep up!

Moderate and 15-25 points in 80 seconds : Good!

Moderate and more than 25 points in 80 seconds: Expert!

Difficult and 1-10 points in 80 seconds: Very well, keep up!

Difficult and 10-20 points in 80 seconds : Good!

Difficult and more than 20 points in 80 seconds: Expert!

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