
Curios:
Curios Search:
Participate: 
131071 is the largest known prime of form 2^(2^k+1)1, where k = 4. [Luhn]
The concatenation of first four happy numbers in reverse order is prime. [Gupta] Pietro Cataldi verified that 131071 is a Mersenne prime in the year 1588. Did the defeat of the Spanish Armada have something to do with it? The largest nth Mersenne prime with n digits. [Beedassy] 131071 is the 35th Fibonacci 17step number, the first odd prime of this type. Note that 2^171 = 131071, making it the 6th Mersenne prime. [Loungrides]
(There is one curio for this number that has not yet been approved by an editor.)
Prime Curios! © 20002018 (all rights
reserved)
privacy statement
