An anonymous reader writes "Riecoin is a decentralized (p2p), open source digital currency. Proof of work is about finding Hardy-Littlewood k-tuples. Ultimately miners are verifying the Riemann hypothesis. Unlike for Primecoin the probability of accepting a false positive goes to zero as the network grows. Primecoin uses Fermat Test which runs the risk of accepting so called Carmichael numbers. Riecoin uses a stronger test to ensure correctness.
Enter decentralized, open source mining with the first scientific proof of work."Link to Original Source