23879

Properties

Appears in sequences

• Primes that remain prime through 3 iterations of function f(x) = 7x + 6.at n=27A023290
• Primes of the form k^2 + k + 9.at n=19A027758
• Primes p such that there is no Carmichael number pqr, p<q<r q, r primes.at n=25A051663
• Numbers n such that primorial(n)/2 + 64 is prime.at n=16A139447
• Number of 2 X 2 matrices with all elements in {0,1,...,n} and determinant in {0,1,...,n}.at n=22A209995
• 2*n^3 - 313*n^2 + 6823*n - 13633.at n=9A218456
• Integers of the form 8k + 7 that can be written as a sum of four distinct squares of the form m, m + 2, m + 3, m + 4, where m == 2 (mod 4).at n=18A243581
• a(n) = prime(n+2)^3 - prime(n+1)^2 + prime(n).at n=7A261464
• Primes p such that p+2^3, p+2^5 and p+2^7 are all primes.at n=35A275475
• Primes p such that p^11 - 1 has 8 divisors.at n=11A342067
• Primes that do not divide any 3-Carmichael numbers.at n=21A369777
• Prime numbersat n=2656