66067

Properties

Appears in sequences

• Primes p such that x^11 = 2 has a solution mod p, but x^(11^2) = 2 has no solution mod p.at n=5A070187
• Primes of form n.0.n+1, where '.' represents concatenation. Or, primes of form 10^(k+1)*n + n + 1, where k is the number of digits in n.at n=8A096525
• Largest prime < 10*a(n-1), a(1)=7.at n=4A124291
• Expansion of series reversion of x/(1 + x + 2*x^4).at n=14A190590
• Primes of the form p^2 + 18, where p is prime.at n=25A201688
• a(n) is the number of primes occurring between A053182(n) and A053183(n) (excluding the endpoints).at n=22A238399
• Primes in A238399.at n=4A238400
• Septic artiads: primes p congruent to 1 mod 14 for which all solutions of the congruence x^3 + x^2 - 2x - 1 == 0 (mod p) are 7th power residues.at n=17A270800
• Indices n such that A272464(n)=1.at n=25A272465
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 573", based on the 5-celled von Neumann neighborhood.at n=38A272997
• Centered 22-gonal primes.at n=32A276262
• Primes equal to a hexagonal number plus 1.at n=41A285790
• Number of nX5 0..1 arrays with every element unequal to 0, 1, 3, 5 or 7 king-move adjacent elements, with upper left element zero.at n=10A304928
• a(n) = Sum_{d|n} d^Omega(d).at n=15A344459
• a(n) = Sum_{d|n} d^(tau(d) - 1).at n=15A348349
• Primes having only {0, 6, 7} as digits.at n=10A385770
• Primes having only {0, 4, 6, 7} as digits.at n=30A386072
• Primes having only {0, 5, 6, 7} as digits.at n=39A386077
• Primes having only {0, 6, 7, 8} as digits.at n=23A386082
• Primes having only {0, 6, 7, 9} as digits.at n=43A386083