90107

Properties

Appears in sequences

• a(1) = 2; a(n+1) is the smallest prime > a(n) which differs from it in every digit.at n=39A068853
• Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1101-1111 pattern in any orientation.at n=10A146864
• Numbers n of the form 4*k+3 such that 2^(m-1) == 1 (mod m) where m = (2*n-1)*n.at n=14A187923
• Prime numbersat n=8727