69827

Properties

Appears in sequences

• Primes associated with A066042.at n=43A066146
• Smaller member of a twin prime pair with a triangular sum.at n=18A086816
• Primes p such that p + 2, 18*p^2 + 1, and 18*(p+2)^2 + 1 are all primes.at n=19A115272
• Primes of the form (2+n)*(1+2*n)+(1+n)*(2+2*n).at n=34A171748
• Let p_(3,2)(m) be the m-th prime == 2(mod 3). Then a(n) is the smallest p_(3,2)(m) such that the interval(p_(3,2)(m)*n, p_(3,2)(m+1)*n) contains exactly one prime == 2 (mod 3).at n=28A210467
• Let p_(3,2)(m) be the m-th prime == 2(mod 3). Then a(n) is the smallest p_(3,2)(m) such that the interval(p_(3,2)(m)*n, p_(3,2)(m+1)*n) contains exactly one prime == 2 (mod 3).at n=34A210467
• Numbers k such that 128 * 3^k + 1 is prime.at n=27A388408
• Prime numbersat n=6921