144973

Properties

Appears in sequences

• Beginning with 3, least member of A007500 such that concatenation of first n terms and its digit reversal both are primes.at n=14A111383
• Number of n X n binary arrays with every 1 adjacent to at least one other 1, but at most one 1 adjacent horizontally and at most one 1 adjacent vertically.at n=4A144052
• Prime numbersat n=13421