] The number, rendered in exponential shorthand, is
] 2^(25,964,951)-1. It has 7,816,230 digits, and if printed in
] its entirety, would fill 235 newspaper pages.
]
] In addition, it falls in a rare category of primes known
] as Mersenne primes, which can be written as 2n-1 where n
] is also prime.
]
] The first few Mersenne primes are easily verifiable --
] inserting 2, 3 and 5 for n produces 3, 7 and 31, all
] prime -- but the math quickly becomes overwhelming for
] larger values.

World's largest known prime number found