81157

Properties

Appears in sequences

• Numbers k such that 1000k+1, 1000k+3, 1000k+7, 1000k+9 are all primes.at n=28A064962
• a(n) is the position of the last two-tuple within the reverse lexicographic set of partitions of 2n and 2n+1, with a(1)-a(n) representing the positions of every 2-tuple partition of 2n and 2n+1.at n=35A216053
• Primes p such that p^4-p^3+1 and p^4-p^3-1 are also primes.at n=33A238136
• Primes p such that 1000p+1, 1000p+3, 1000p+7 and 1000p+9 are prime.at n=6A242562
• Lesser p of a sexy prime pair such that (p-3)/2 is also the lesser prime of a sexy prime pair.at n=34A358571
• Prime numbersat n=7943