Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 162: | \[{18^{162}-1\over17}\] | 73 × 19 × 73 × 163 × 307 × 487 × 991 × 23761 × 34327 × 253369 × 465841 × 1464049 × 4464073 × 27470503 × 108813457 × 3211621489 × 31865908033<11> × 1234749313729<13> × 2822726926367077537<19> × 1964508729666289645801020967<28> × 378836522988296926233722170411<30> × 2317745463335260122632425120711<31> |