972197

Properties

Appears in sequences

• Primes that remain prime through 5 iterations of function f(x) = 6x + 5.at n=30A023345
• a(n) is the largest prime of the form x^2 + 1 <= 10^n.at n=5A083846
• Lower twin primes p1 such that p1-1 is a square.at n=27A145824
• Primes of the form 81*k^2 - 72*k + 17.at n=12A154276
• Primes of the form 1+A162143(k).at n=15A164517
• Prime numbersat n=76521