Someone always claims that you can't efficiently represent long number with unary. Of course you can. Use logarithmic unary.<p>See.
IBM DS8900F Architecture and Implementation
<a href="https://www.redbooks.ibm.com/redbooks/pdfs/sg248456.pdf" rel="nofollow">https://www.redbooks.ibm.com/redbooks/pdfs/sg248456.pdf</a><p>page 11111111111111111111111111111111 (Log1)