Primecoin is described as 'innovative cryptocurrency, a form of digital currency secured by cryptography and issued through a decentralized mining market. Derived from Satoshi Nakamoto’s Bitcoin, Primecoin introduces an unique form of proof-of-work based on prime numbers' and is a Cryptocurrency Coin in the Bitcoin & Cryptocurrency category. There are more than 50 alternatives to Primecoin, not only websites but also apps for a variety of platforms, including Linux, Mac, Windows and Android. The best alternative is Bitcoin, which is both free and Open Source. Other great sites and apps similar to Primecoin are Monero (Free, Open Source), Ethereum (Free, Open Source), Litecoin (Free, Open Source) and NameCoin (Free, Open Source).
Peony coin is a cryptocurrency with Scrypt algorithm about a possibility of POS of mining – PEONY (PNY). According to the teachings of Feng Shui the peony attracts luck and symbolizes all the best that happens in a human life.