So i was trying to withdraw btc from exchange, and I accidentally entered the address into the amount, everything else was correct, and it still went through...
does this mean i only sent 1 btc, since address starts with 1?
I'm thinking about the last line. So, if i want to withdraw 100BTC, it only sent 1BTC since it starts with 1?
What you could do is to contact the support about this matter. Im sure the transaction was not sent as it needs a combination for it to be sendable. Should just contact the admin. Wiki says so:
https://en.bitcoin.it/wiki/Address#Addresses_are_case_sensitive_and_exact