Monroe (tree) Monroe (tree) Monroe is a huge giant sequoia tree in Giant Forest, a sequoia grove where the largest tree in the world lives - the General Sherman. The Monroe tree is the tenth largest giant sequoia in the world. It was named by Wendell Flint. Nearby trees include the Washington Tree which was once the second largest tree in the world, but since it lost half its trunk in 2005 many sequoias are now larger. The Monroe tree has dull bark and no distinguishing features except for its great size and massive top. It was measured in 1980 by Wendell
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