Neat News - Neat things do happen

There are infinitely many prime numbers, however, it is not easy to find very big ones and establish that they are prime. One class of prime numbers are Mersenne prime numbers, they have the form 2^p-1, where p is a prime number as well. Now the 50th Mersenne prime has been found. For it p is 77,232,917; the number itself has more than 23 million positions.