The team behind Primecoin project describes it as an innovative cryptocurrency. The person or a group of people behind this crypto go by the pseudonym Sunny King. Just like Bitcoin, it is a digital currency which is secured by cryptography and issued through a decentralized market. The crypto has a unique proof-of-work system which is based on prime numbers. It is touted as the first cryptocurrency designed with a scientific computing as its work.
For its proof-of-work (PoW), Primecoin utilizes the finding of prime chains which are made of Cunningham chains and bit-twin chains. This leads to the project coming up with useful products. The Primecoin ecosystem is designed in such a way that work is efficiently verifiable by all nodes on the entire network. This is made possible by ensuring that the size of prime numbers in the system cannot be too large.