29131

Properties

Appears in sequences

• a(n) is the smallest prime p such that p^2 divides n^(p-1) - 1.at n=14A039951
• Smallest odd prime p such that p^2 | n^(p-1) - 1.at n=14A096082
• a(n) = n^3 + 71*n + 1.at n=30A124363
• Primes p such that p*floor(p/2) - 4 and p*floor(p/2) + 4 are prime numbers.at n=35A164622
• Primes p = prime(k) of form 13//r, s//13 or t//13//u and sod(p) = sod(k).at n=23A169645
• Primes in A118482.at n=12A172102
• Primes of the form 2*n^2 + 58*n + 27.at n=23A217498
• Primes p such that p-2 and q are primes, where q is concatenation of binary representations of p and p-2: q = p * 2^L + p-2, where L is the length of binary representation of p-2: L=A070939(p-2).at n=42A232237
• Primes p such that p^2 divides 15^(p-1) - 1.at n=0A242741
• Smallest Wieferich prime (> sqrt(n)) in base n.at n=14A247072
• Intersection of A013917 and A071150.at n=20A255017
• Primes p for which exactly five bases b with 1 < b < p exist such that p is a base b Wieferich prime.at n=11A255208
• Numbers k such that 136^k - 135^k is prime.at n=7A259530
• Hyperartiads.at n=29A270798
• Prime numbersat n=3166