Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 338: | \[{18^{338}-1\over17}\] | 19 × 79 × 131 × 521 × 2081 × 4057 × 1582836763 × 4020180841 × 29759719289<11> × 291237055097<12> × 8010909801337<13> × 430608464433811<15> × 198383812344828058391<21> × 1783136240301993953256739<25> × 4307879238838868183806405247<28> × 563915195408451484310296017487<30> × 8921092532746312807529605079688457<34> × 380981769660353078098207129969796177543646195911959992563382703831365300022620151<81> × 2343576343853150180929370167653804236632052673266247666168337787818694663047225139399166365109517542583898355460239076079867<124> |