38707

Properties

Appears in sequences

• Largest prime p==3 (mod 8) such that Q(sqrt(-p)) has class number 2n+1.at n=9A002149
• Largest squarefree number k such that Q(sqrt(-k)) has class number n.at n=18A038552
• Discriminants of imaginary quadratic fields with class number 19 (negated).at n=46A046016
• Primes of the form floor(Pi*k^2).at n=16A227794
• Lucky primes k such that k+6 is also a lucky prime.at n=39A309381
• Primes p such that the concatenation of p^3, p^2, p and 1 is prime.at n=40A323428
• First of three consecutive primes p,q,r such that r^2-p^2+p, r^2-p^2+q and r^2-p^2+r are consecutive primes.at n=38A347531
• 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=18A357600
• Lesser of 2 successive primes (k, k+4) sandwiching 3 consecutive nonsquarefree numbers.at n=26A366352
• Prime numbersat n=4078