I had to find out what a Mersenne number was again (vaguely remember but forgot) and I was shocked to find this problem in mathematics: "It is not known whethe

I had to find out what a Mersenne number was again (vaguely remember but forgot) and I was shocked to find this problem in mathematics: "It is not known whether or not there is an odd perfect number, but if there is one it is big! This is probably the oldest unsolved problem in all of mathematics." [1] [1]: http://primes.utm.edu/mersenne/index.html http://primes.utm.edu/mersenne/index.html