[Cryptography] Need a list of Solinas/pseudo Mersene Primes.

[Sidney Markowitz]

Phillip Hallam-Baker wrote on 31/08/18 3:39 AM:
 > I am using Shamir secret sharing as a recovery mechanism for private keys and
 > would like to extend this to recover quantum resistant keys. As a result, I
 > need a nice round prime greater than 2^256.
 >
 > Finding a nice round prime smaller than 2^256 is easy, 2^255-2^19-1. But I
 > need 2^256-x. I was looking for lists of Solinas primes but can't find one
 > with what I need.
 >
 > Anyone got a pointer?

Are you asking for exactly 256 or greater than or equal to 256?

There are a number of both listed in the table of curves in
https://safecurves.cr.yp.to/