This number is a prime.
The hull number of Cape Keltic in the Hallmark Hall of Fame movie Calm at Sunset. [Haga]
1579 915799 99157999 9991579999 999915799999[Post]
The largest prime that consists of odd digits concatenated in ascending order. [Loungrides]
The smallest 4-digit prime, with distinct digits, whose alternating the two internal digits another prime is created, (1759), concatenated from two double-digit primes. [Loungrides]