1769473

Properties

Appears in sequences

• Class 1- (or Pierpont) primes: primes of the form 2^t*3^u + 1.at n=44A005109
• Primes obtained as the product of successive terms of A084039 + 1, i.e., a(n) = A084039(n)*A084039(n+1) + 1.at n=4A084040
• Numbers n such that sigma(n) = 2n - 3*phi(phi(n)).at n=39A110074
• Primes of the form 2k^3+1.at n=25A201107
• Generalized cuban primes (A007645) which are also Class 1- (or Pierpont) primes (A005109).at n=39A217035
• Primes q such that Sum_(q-1; i=1..m) e(i)/p(i) is an integer k, where the prime factorization of n is Product_(n; i=1..m) p(i)^e(i).at n=9A267143
• Primes p such that there exists a cyclic permutation of the nonzero residues modulo p such that v^2 - 4*u*w == 0 (mod p) for any three consecutive residues u,v,w.at n=27A376008
• Prime numbersat n=132938