571381

Properties

Appears in sequences

• Least positive k such that 10^n + {k, k+2, k+6, k+8} are all prime.at n=23A121066
• Hypotenuses of primitive Pythagorean triangles two sides of which are Pythagorean primes.at n=16A308341
• Primes of the form (p^k+1)/2 where p is prime and k > 1.at n=43A308442
• 10^n + a(n) is the least (n+1)-digit prime member of a prime 5-tuple, or a(n) = 0 if no such number exists.at n=23A343635
• Prime numbersat n=46932