is Lenovo T61 is outdated?

Yes. It is basically an outdated laptop (2007). I don't know what the currency translates to, but in the US a used T61 can be bought for around $225 - $250. That is half the cost of an inexpensive modern laptop that sells for $500 (or less if it is on sale) with a 3rd generation Intel Ivy Bridge CPU. That is basically three generations ahead of the Core 2 Duo CPU in the old ThinkPad T61.

It can still be used for basic things like word processing, spreadsheets and surfing the internet.