
Curios:
Curios Search:
Participate: 
GIMPS has discovered a new largest known prime number: 2^{82589933}1 (24,862,048 digits) Delete any digit of 3137 and it will remain prime. [Blanchette] The smallest fourdigit prime that is comprised of two consecutive primes concatenated. [Patterson] The largest prime such that each substring is a prime or 1. [Capelle] The only prime formed from the concatenation in any order of two 2digit successive emirps. [Loungrides] 3137 is the sum of 31 consecutive primes whose first two are 31 and 37. [Silva] The smallest Honaker prime that is one more than a perfect square. [Gudipati] The larger of only two primes of form n^2+1 concatenated from two consecutive doubledigit primes, i.e., 3137=56^2+1. The other is 2917 = 54^2+1. [Loungrides] The only Honaker prime concatenated from two doubledigit emirps. [Loungrides] The smallest of only three righttruncatable primes formed by concatenating two doubledigit emirps. The other are 3797 and 7331. [Loungrides]
(There are 3 curios for this number that have not yet been approved by an editor.)
Prime Curios! © 20002019 (all rights
reserved)
privacy statement
