Is It Prime?
Beginner · Write the code · from 50 Python Practice Problems with Instant Answer Checking (Beginner to Advanced)
From the lesson: 50 Python Practice Problems with Instant Answer Checking (Beginner to Advanced)
Fifty problems, each with a code editor and real tests. Write your solution, press Check, and see exactly which cases pass. Stuck? Hints reveal one at a time, and the solution unlocks once you have checked at least once. Your code and progress are saved in this browser.
Read the lessonWrite is_prime(n) that returns True if n is a prime number. Numbers below 2 are not prime. Only test divisors up to the square root of n.
def is_prime(n):
pass
Solution unlocks after your first Check
What Check runs
Your code runs first, then each of these lines. The output must match exactly.
| Runs | Expected output |
|---|---|
| is_prime(7) | True |
| is_prime(1) | False |
| is_prime(25) | False |
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