Snaefell Wheel was started to restore the wheel to its home in Laxey and on 20 August 2006, the wheel had its official reopening ceremony and began turning for the first time in decades. To mark the occasion of the official opening, and in similarity to its big sister, a piece of music "Snaefell Wheel March" was specially written by Paul Dunderdale for the occasion and performed for the first time by Onchan Silver Band at the opening ceremony, with suitable fanfare. Snaefell Wheel The Snaefell Wheel (also known as Lady Evelyn) is a waterwheel in Laxey, Isle of Man. The wheel
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