25439

Properties

Appears in sequences

• Primes p such that |100-p|, |1000-p|, |10000-p| and |100000-p| are also primes.at n=26A126021
• Primes of the form ((p+1)/2)^2+((p-1)/2), where p is prime.at n=28A163419
• The 300-degree spoke (or ray) of a hexagonal spiral of Ulam.at n=46A244804
• Primes of the form prime(n+2)*prime(n+1) - prime(n) +- 1.at n=24A294625
• a(n) = A003010(n-2) mod (2^n - 1).at n=14A317977
• a(n) = [x^n] x * Product_{j>=0} (1 + x^(2^j) + n*x^(2^(j+1))).at n=23A342643
• Prime numbersat n=2804