93307

Properties

Appears in sequences

• Largest prime p==3 (mod 8) such that Q(sqrt(-p)) has class number 2n+1.at n=12A002149
• Largest squarefree number k such that Q(sqrt(-k)) has class number n.at n=24A038552
• Primes p such that p+5==0 (mod phi(p+5)).at n=38A067542
• Take A000040, omit commas: 23571113171923..., select 5-digit primes seen when scanning from left.at n=30A073038
• Concatenate the primes as 2357111317192329313..., then insert commas from left to right so that between each pair of successive commas is a prime, always making the new prime as small as possible.at n=41A074721
• Primes of the form 2n^2 - 5.at n=29A201713
• Primes of the form 8n^2 - 5.at n=15A201857
• Primes p such that p+2^4, p+2^6, p+2^8 and p+2^10 are all primes.at n=23A269258
• Largest number k such that C(-k) is the cyclic group of order n, where C(D) is the class group of the quadratic field with discriminant D; or 0 if no such k exists.at n=24A357600
• Prime numbersat n=9013