What does twin prime numbers mean?
A twin prime is a prime number that differs from another prime
number by two. Except for the pair (2, 3), this is the smallest
possible difference between two primes. Some examples of twin prime
pairs are (3, 5), (5, 7), (11, 13), (17, 19), (29, 31) and (41,
43). Sometimes the term twin prime is used for a pair of twin
primes; an alternative name for this is prime twin. Hope this helps
:)