Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 290: | \[{18^{290}-1\over17}\] | 11 × 19 × 41 × 59 × 1451 × 2711 × 4931 × 9041 × 52201 × 1270201 × 21584216281<11> × 1505548068007783<16> × 98800490511312118297<20> × 312275133902139621761<21> × 1586801117788981679412251<25> × 4542493092455856362519026681<28> × 2255781524824231358697279947382689<34> × 4229902794765347656989245141176300254137559741635181464130354096931133881<73> × 1551401186925508484133392510398878345592061650403823690709863421889901131274144625280384307820122819174127471<109> |