27091

Properties

Appears in sequences

• a(n) = n^3 + 3*n + 1.at n=30A005491
• Primes that are palindromic in base 5.at n=35A029973
• Number of partitions of n with equal number of parts congruent to each of 0, 1 and 3 (mod 4).at n=62A046767
• Prime number spiral (clockwise, Southwest spoke).at n=27A054568
• Prime(n) and prime(n+3) use the same digits.at n=30A069795
• Smallest of six consecutive primes whose sum of digits is prime.at n=20A106719
• Numbers k such that Sum_{i=1..k} i^6 divides Product_{i=1..k} i^6.at n=31A166606
• Honaker primes of the form p = 2*k-1 with sum-of-digits(p) = sum-of-digits(k).at n=13A176111
• Primes of the form k^3+3*k+1.at n=7A180275
• Primes prime(k) such that the sum of the squares of digits of prime(k) equals the sum of the squares of digits of k.at n=14A193255
• Ceiling((n+1/n)^3).at n=29A197773
• Primes p such that both (p^2 + 5)/6 and (p^4 + 5)/6 are prime.at n=22A253925
• Number of (n+2)X(2+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00010101 or 01010101.at n=11A261286
• Primes p such that both 2p-1 and 2p^2-2p+1 are prime.at n=33A274609
• Numbers that are both lucky-indexed primes and prime-indexed lucky numbers.at n=8A307009
• Prime numbers that have the same base-10 digits as their prime index (with multiplicity), disregarding zero digits.at n=1A355317
• Lexicographically earliest sequence of distinct primes whose partial products lie between noncomposite numbers.at n=39A359940
• Primes p whose index has a submultiset of their decimal digits.at n=29A365678
• Centered 30-gonal numbers.at n=42A389799
• Prime numbersat n=2971