./cuBitCrack --keyspace 213fa19b5cbbc317c:21d4e0733e7eb94b0 13zb1hQbWVsc2S7ZTZnP2G4undNNpdh5so --out lottery.txt [/quote] Your "gaps" are keyspaces much bigger than mine (500/1500 billions keys), you could have more chance randomly with keyhunt-cuda.