27751

Properties

Appears in sequences

• Primes that remain prime through 3 iterations of function f(x) = 8x + 3.at n=8A023292
• Primes of the form 5k^2 + 5k + 1.at n=39A090562
• Balanced primes of order eleven.at n=13A096703
• Numbers n such that 5*10^n + 7*R_n + 2 is prime, where R_n = 11...1 is the repunit (A002275) of length n.at n=13A103021
• Number of binary strings of length n with no substrings equal to 0000, 0011 or 1101.at n=20A164431
• Primes of the form 250n + 1.at n=31A179231
• Numbers k such that k^2+1 = 2p,(k+1)^2+1 = 5q, (k+2)^2+1 = 10r where p, q, and r are primes.at n=31A181619
• Primes of the form 6n^2 + 7.at n=27A201601
• a(n) = floor(5*prime(n)^2 / 4).at n=34A246010
• Initial member of 6 consecutive primes a, b, c, d, e, f such that both (f + a)/(d - c) and (e + b)/(d - c) are prime.at n=13A293619
• Number of double-free integer partitions of n.at n=48A323092
• Prime numbersat n=3028