SS Ellan Vannin (1854) the £14,000 reputed to have been available in 1856) a sum which the directors and shareholders present would not accept. Again the "Ellan Vannin" resumed revenue service whilst further attempts were made to find a buyer. The "Ellan Vannin's" final excursion took her across to the coast lines of County Louth and County Down via Carlingford Lough on 25 June, before she left the Isle of Man for good. Finally the Directors of the Castletown Steam Navigation Company (by now in serious financial difficulties) managed to find a buyer. "Ellan Vannin" was sold to Cunard & Wilson who were acting
Largest known prime number the progression of the largest known prime number in ascending order. Here M = 2 − 1 is the Mersenne number with exponent "n". The longest record-holder known was M = 524,287, which was the largest known prime for 144 years. No records are known before 1456. GIMPS found the fourteen latest records (all of them Mersenne primes) on ordinary computers operated by participants around the world. A list of the 5,000 largest known primes is maintained by Chris K. Caldwell, of which the twenty largest are listed below. Largest known prime number The largest known prime number () is