Laxey agreement that it should be kept in perpetual running order for the people of the Isle of Man. In 1965 the Isle of Man Government bought the wheel and the site. Restoration work began, and in 1989 it was put under the control of Manx National Heritage. Great Laxey Mine Railway re-opened with two small steam engines in September 2004 to carry passengers along the restored route. Laxey is the site of King Orry's Grave. The Laxey Woollen Mills were founded in 1881 by Egbert Rydings, supported by John Ruskin, and were originally water powered. The mills are known for
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