These are the next riddles from Satoshi. public keys are known, but the range is unknown. Each address contains 50 bitcoins. why does he ask them? and apparently the kangaroo method is precisely aimed at such a search.
Yeah, kangaroo is perfect to crack 256bit range, good luck!
all addresses to these public keys start with 1, which means that they are in the range of 160 bits. That's what I read on the forum.