Rico, can you tell about 160 key space?? U mean addresses wich begins with 0a-b - 01-9? or 00 or 000 ?
160 space is the space of the first 2^160 private keys (from 1 to 2^160).
What you mean with: "it is into 60 field of 90?"
Ok thanks i see now .
with 60 or 90 field i meant from directory.io site where 90 is = 904625697166532776746648320380374280100293470930272690489102837043110636675 and i foudn a key in 60 field !
if 90 = 904625697166532776746648320380374280100293470930272690489102837043110636675
Then what does 60 = ?
What was the exact page number you used?
I do not think you meant page 60 of 904625697166532776746648320380374280100293470930272690489102837043110636675 because 15cUJUVUV89sVZGqon6JENAsVRzGB9vch3 does not appear on page 60 and in fact there are no addresses on page 60 that show as having transactions:
http://directory.io/60
Are you saying you picked a page at random 60xxxxx...xxxx and by chance found an address (15cUJUVUV89sVZGqon6JENAsVRzGB9vch3) which had been used?
If so, what is the exact page number?
Yes, 15cUJUVUV89sVZGqon6JENAsVRzGB9vch3 has been used but it now contains 0 BTC.
https://blockchain.info/address/15cUJUVUV89sVZGqon6JENAsVRzGB9vch3
Note, coming up with a page that contains a used address or an address that currently contains BTC does not prove anything. I can do that. All I have to do is get one of my old private keys, calculate the page number and viola I can post that by chance I picked a page with a used address on it.