40493

Properties

Appears in sequences

• Primes that remain prime through 4 iterations of function f(x) = 9x + 10.at n=22A023327
• Primes p such that |p - q| is a square, where q is the reversal of p.at n=39A059798
• Non-palindromic primes which on subtracting their reversal give perfect squares.at n=18A080177
• Primes of the form k^3 + k^2 + k - 1.at n=9A156018
• Primes of the form 5n^2 - 7.at n=19A201788
• Balanced primes which are the average of two successive semiprimes.at n=25A212820
• Number of n X 2 0,1 arrays indicating 2 X 2 subblocks of some larger (n+1) X 3 binary array having two adjacent 1's and two adjacent 0's, with rows and columns of the latter in lexicographically nondecreasing order.at n=12A227329
• Primes having primitive roots 2, 3, 5, 7, 11, and 13.at n=33A241047
• Primes p such that p + prime(p) is a square.at n=11A242625
• Primes 2*p*q-2*q*r+r*s where p,q,r,s are consecutive primes.at n=16A341937
• Prime numbers followed by two consecutive numbers which are products of four distinct primes (or tetraprimes).at n=12A362578
• Prime numbersat n=4245