What is the smallest prime number?
The smallest prime number is 2, and it is the only even prime number.
Calculator
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Analysis
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How to Use
Step-by-step instructions
- 1Enter any positive integer.
- 2The calculator will tell you if it's prime or composite.
- 3If composite, it will show you the smallest divisor.
Prime Testing
A prime number is a natural number greater than 1 that has no positive divisors other than 1 and itself.
n % i !== 0 for all i ≤ √nVariables:
Frequently Asked Questions
Is 1 a prime number?
No, 1 is not considered a prime number because a prime must have exactly two distinct positive divisors: 1 and itself.