176401

Properties

Appears in sequences

• Numbers whose least quadratic nonresidue (A020649) is 23.at n=28A025028
• Primes of the form p*q+2 where p and q are consecutive primes.at n=17A048880
• Primes of form pq + 2 where p and q are twin primes.at n=6A051779
• Primes of form x^2+1 where x = LCM(1,2,...,k) for some k.at n=3A053609
• Table read by rows where i-th row consists of primes P of the form P=(j*P(i)#)^2 +1 with 0 < j < P(i+1). Here P(i)# = A002110(i).at n=9A087728
• Smallest prime p that is a palindrome in n different bases < p.at n=13A087911
• Primes of form (prime(n)^2 + prime(n+1)^2)/2.at n=13A093343
• Triangle, read by rows, T(n, k) = T(n, k-1) + (k+1)*n!, T(n, 0) = 1.at n=35A105064
• Primes in the triangle defined by T(0,c)=1, T(1,c)=c, T(r,1)=1 and T(r,c) = T(r,c-1) + c*(r-1)!.at n=13A105071
• Primes associated with A127435.at n=23A127436
• Primes of the form prime(x)*prime(x+1) + (prime(x+1)-prime(x)).at n=16A140121
• Primes of the form 9*n^2 + 1.at n=21A156226
• Primes of the form p^2 + 2*p + 2 where p is prime.at n=21A157467
• The first number that is (at least) n-fold intrinsically 3-palindromic (represented in base ten).at n=11A171702
• Primes of the form (n^2)*(n+1)^2 + 1.at n=10A179923
• Primes that can be written as a sum of a positive square and a positive cube in more than two ways.at n=17A206606
• Primes of the form 2520k + 1 for some k.at n=26A217588
• Primes p such that the maximal length of a Buchi sequence in Z/pZ is less than the value of A124882 for that prime.at n=17A261404
• Löschian numbers (A003136) of the form k^2+1.at n=32A271184
• Numbers d > 1 such that the class number of Q(sqrt(d)) is strictly greater than the class number of Q(sqrt(m)) for all m < d.at n=18A283658