In that case you can encrypt your message by considering it as one big number, and creating a message long enough to encrypt to that many blocks. Inefficient i

In that case you can encrypt your message by considering it as one big number, and creating a message long enough to encrypt to that many blocks. Inefficient in this particular case, but there are length-related attacks, so it's at least not crazily out of the domain of discourse. But I had to wait for you to qualify it that way, because if someone knows this is your plan, they can compensate with an "encryption" scheme that counters the approach.