3 (the 2nd prime)

 
Next prime5
Previous prime2
Octal(3)8
Hexadecimal(3)16
Prime gap2
1st Twin prime (the small number)The big number is 5 .
1st Cousin prime (the small number)The big number is 7 .
1st Prime of the Form 4n+3 
1st Mersenne prime22 - 1
1st Fermat prime220 + 1
1st Euclid prime2 + 1
1st primorial prime2 + 1
2nd Factorial prime2! + 1
2nd Double factorial prime2!! + 1
2nd Sophie Germain prime 
2nd Left-truncatable prime 
2nd Right-truncatable prime 
2nd Two-sided prime