It would take a minimum speed of 5 TerraKeys/s to start being in the correct time frame for #66. Multiply by 2 the delay or speed for each key above without pubkey
Edit maths does work out for what im doing

Please please point me to where these apps can do 1 billion a sec per key or any info
it all depends on your hardware but let's say that with average hardware Bitcrack vanbitcracken keyhunt can do it without any problem or even much more