Laxey Laxey Laxey () is a village on the east coast of the Isle of Man. Its name derives from the Old Norse "Laxa" meaning 'Salmon River'. Its key distinguishing features are its three working vintage railways and the largest working waterwheel in the world. It is also the location of King Orry's Grave. The village lies on the A2, the main Douglas to Ramsey road, and on the vintage Manx Electric Railway, and Snaefell Mountain Railway. Laxey Glen is one of the Manx National Glens; another glen, Dhoon Glen, is about 1 miles away. The Raad ny Foillan long distance
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