More detail: https://ohiobitcoin.com/coins/gapcoin
Gapcoin (Symbol: GAP) is Peer-to-Peer cryptocurrency with the attempt to remove the sticking points of other scientific token like Primecoin or Riecoin. It’s a branch of Satoshi Nakamotos bitcoin, a distributed payment platform with no intervention from banks, governments, and other centralized regulators. Gapcoin allows users to anonymously send money worldwide in no time. Dissimilar to bitcoin which burns electricity for its own sake, Gapcoin’s Proof-of-Work (PoW) function does useful work by searching for large prime gaps. There wasn’t any premine! To avoid instamine, the reward of the first 1152 blocks (about 48 hours) will increase quadratically to its absolute value: the current difficulty. Block reward will be 1/1152^2 * blockheight^2 * difficulty for the first 1152 blocks.
