27277

Properties

Appears in sequences

• Primes that contain digits 2 and 7 only.at n=10A020459
• Primes p for which the period of reciprocal 1/p is (p-1)/12.at n=35A056217
• Primes in which the frequency of every digit is also prime.at n=23A113615
• Primes with prime number of only prime digits (i.e., 2, 3, 5, 7).at n=41A124888
• Primes of the form p = prime(k+1) such that prime(k) = (prime(k+3)+prime(k-1))/2.at n=26A126239
• Primes p such that lcm(1,2,3,...,p-2,p-1,p) - 1 is prime.at n=24A154524
• a(n) = (5*2^(n+1)-9-(-1)^n)/6-2*n.at n=14A171507
• Primes formed by concatenating k, k, and 7.at n=8A210513
• Primes that contain only the digits (2, 3, 7).at n=36A214704
• Primes that contain only the digits (2, 5, 7).at n=22A214705
• Smallest k<3*2^n such that 3*2^n+k is the smallest of four consecutive primes in arithmetic progression or 0 if no solution.at n=36A230852
• Primes which become palindromic primes when the digits are rotated once to the right.at n=18A235000
• Primes having only {2, 7, 9} as digits.at n=31A261182
• Primes having only {0, 2, 7} as digits.at n=18A261267
• a(n) = 137*n^2 - 4043*n + 27277.at n=0A267706
• Numbers with digits 2 and 7 only.at n=41A284921
• Yarborough primes that remain Yarborough primes when each of their digits are replaced by their cubes.at n=40A296563
• Primes in A340180.at n=48A342644
• Prime powers k such that lcm(1, 2, 3, ..., k)-1 is prime.at n=27A385564
• Primes having only {2, 4, 7} as digits.at n=19A385784