hi all! 
I would like to share with you a result i’ve been recently working on, that is dealing with large integers (e.g. 64/128 bits) in discrete-CKKS. I implemented a possible solution using the openfhe implementation of CKKS and you can find the source code on GitHub and also a preprint on ePrint.
i would be happy to receive some feedback in case you are using/playing around with it! 
thanks!!