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They're primes which are separated by exactly six non-prime numbers. It remains an open question whether or not there are infinitely many sexy primes. More gen
by throwawaymath 8y ago
They're primes which are separated by exactly six non-prime numbers. It remains an open question whether or not there are infinitely many sexy primes.
More generally, see the article on prime gaps: https://en.m.wikipedia.org/wiki/Prime_gap https://en.m.wikipedia.org/wiki/Prime_gap
- jfk13 8y ago> They're primes which are separated by exactly six non-prime numbers. That doesn't match what the article says: "prime numbers that differ from each other by six". So they're separated by five other numbers (which are not necessarily all non-primes).
- LanceH 8y agoSeparated by five natural numbers.
- moate 8y ago5,11 pair runs counter to this definition. .
- jjtheblunt 8y agoseparated by is 1 less than the difference, so separated by 5 composite numbers is what you meant? i mean it's just a wording issue.
- throwawaymath 8y agoYes, that’s what I meant. Thanks for the charitable correction. Great to see the HN tradition of downvoting for an off by one error continues strong as well...
- deleted 8y ago[deleted]