55487

Properties

Appears in sequences

• Primes that remain prime through 4 iterations of function f(x) = 2x + 3.at n=19A023303
• a(n) = 48*n^2 - 1.at n=34A065532
• Primes of the form 3*m^2 - 1.at n=31A089682
• Primes p such that the decimal expansion of p remains prime under two iterations of base-10 to base-2 conversions.at n=15A123266
• Primes of the form 12*n^2-1.at n=30A143830
• Lexicographically earliest infinite sequence of distinct primes such that, for n > 0, 2n | (a(n+1) - a(n)) and, for n > 0, b(n+1) > b(n) where b(n) = (a(n+1) - a(n)) / 2n.at n=31A350392
• Primes p such that if q and r are the next two primes, (p - 1)^2 + 1, (q - 1)^2 + 1 and (r - 1)^2 + 1 are all prime.at n=7A376605
• Prime numbersat n=5632