A counting system based on powers of 19: 19 361 6859 130321 2476099 47045881 893871739 16983563041 322687697779 6131066257801 116490258898219 2213314919066161 Full Repetend Prime Numbers: 7, 11, 13, 23, 29, 37, 41, 43, 47, 53, 83, 89, 113, 139, 163, 173, 191, 193, 239, 251, 257, 263, 269, 281, 293, 311, 317, 337, 347, 359, 367, 401, 419, 433, 443, 449 Octotrigesimal System (Extended Nonadecinary): https://scratch.mit.edu/projects/802950508
