Twin prime conjecture
The twin prime conjecture concerns twin primes, which are primes such that is also prime.
Conjecture (Twin prime conjecture).
There are infinitely many twin primes.
As of 2011, the largest known twin prime pair is 3756801695685 × 2666669 ± 1.
- Strong twin prime conjecture
- K-tuple conjecture
- Euclid's proof that there are infinitely many primes