As of 30 August 2020, the rank of PRV marketcap (~$18,000,000) would be around 366 if it was listed on CMC: https://coinmarketcap.com/historical/20200830/
As of 12 August 2020, the rank of PRV marketcap (~$11,656,970) was around 446: https://coinmarketcap.com/historical/20200812/
At the mainnet launch (using the first price on incscan), it (~0.13 x 5m= $650,000) was around 837: https://coinmarketcap.com/historical/20191124/