Base 13 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
161: | \[{13^{161}-1\over12}\] | 1381 × 3221 × 5229043 × 2519545342349331183143<22> × 47997392497374259176994238952273383181800129<44> × 412647584179177401418889316551332818291991099<45> × 15884470003892794712765740428811855443509936065544304319<56> |