Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 160: | \[{18^{160}-1\over17}\] | 53 × 11 × 13 × 19 × 41 × 97 × 113 × 641 × 881 × 929 × 2711 × 9041 × 15101 × 145501 × 113607841 × 3930785153 × 17619087361<11> × 30894471809<11> × 545145333573761<15> × 137841514501966721<18> × 23007113434668367286031526391280991361<38> × 22643555386444271630665200524987272707468676718600644481<56> |