3137 (another Prime Pages' Curiosity)
 Curios: Curios Search:   Participate: Delete any digit of 3137 and it will remain prime. [Blanchette] The smallest four-digit 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 2-digit successive emirps. [Loungrides] 3137 is the sum of 31 consecutive primes whose first two are 31 and 37. [Silva] The larger of only two primes of form n^2+1 concatenated from two consecutive double-digit primes, i.e., 3137=56^2+1. The other is 2917 = 54^2+1. [Loungrides] The only Honaker prime concatenated from two double-digit emirps. [Loungrides] The smallest of only three right-truncatable primes formed by concatenating two double-digit emirps. The other are 3797 and 7331. [Loungrides] (There are 4 curios for this number that have not yet been approved by an editor.) Prime Curios! © 2000-2018 (all rights reserved)  privacy statement