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 Largest known prime number The largest known prime number () is 2 − 1, a number with 23,249,425 digits. It was found by the Great Internet Mersenne Prime Search (GIMPS) in 2017. Euclid proved that there is no largest prime number, and many mathematicians and hobbyists continue to search for large prime numbers. Many of the largest known primes are Mersenne primes. , the seven largest known primes are Mersenne primes. The last sixteen record primes were Mersenne primes. The fast Fourier transform implementation of the Lucas–Lehmer primality test for Mersenne numbers is fast compared to other known primality tests