38669

Properties

Appears in sequences

• Largest prime factor of product of first n primes - 1, or 1 if no such prime exists.at n=11A002584
• Numbers n such that n is a substring of its square in base 3 (written in base 10).at n=36A018827
• Numbers n such that n is a substring of its square in base 9 (written in base 10).at n=13A018833
• Let (p1,p2), (p3,p4) be pairs of twin primes with p1*p2=p3+p4-1; sequence gives values of p1.at n=26A047976
• Number of polyominoes with n cells that tile the plane.at n=12A054359
• Smallest prime with digit product 6^n.at n=5A091465
• Prime numbers p such that p - primepi(p) is a square, where primepi is the prime counting function.at n=21A245061
• Smallest prime number p such that p + pps(1), p + pps(2), ..., p + pps(n) are all prime but p + pps(n+1) is not, where pps(n) is the partial primorial sum (A060389(n)).at n=7A257466
• Numbers k such that 4*10^k - 71 is prime.at n=18A294917
• Prime terms of A000328.at n=31A381017
• Prime numbersat n=4073