Fact0rn
What is it?
Fact0rn is a proof of work cryptocurrency which changes the hashing algorithm seen in Bitcoin and similar POW coins to factoring. Thus making it the only cryptocurrency whose consensus is actually useful and can be used in things beyond just securing the network. Fact0rn received a 100,000$ grant from Coinbase to develop this theory:
https://www.coinbase.com/blog/fact0rn-blockchain-integer-factorization-as-proof-of-work-pow. The whitepaper is here:
https://drive.google.com/file/d/1AJ5_MTIhdI-lz8X35WGi20JNnbN_q2vn/view Who cares about factoring?
The digital security of banks, 500 Fortune companies, governments and many IoT devices depend on RSA — a cryptographic system whose security is provided by the difficulty of factoring integers into their prime factors. In addition to the interest from private industry there are more than a dozen active academic communities that factor integers as a hobby in the hopes of advancing our knowledge of mathematical theory in various areas. Many of them offer large sums of money for factorization. Fact0rn also plans to have a marketplace essentially for factoring.
Tokenomics
The Fact0rn tokenomics model is built around a unique difficulty adjustment mechanism based on prime factorization. The key takeaway is that the difficulty of mining roughly increases 6-9 times for every doubling of the block reward. This intricate design aims to balance inflation and scarcity, ensuring long-term network sustainability.
No VCs, fairly launched, no pre-mine. Network launched in April 2022:
https://twitter.com/LionesEscanor/status/1516720678812200965 
