Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 245: | \[{18^{245}-1\over17}\] | 41 × 71 × 449 × 2711 × 80207 × 101921 × 1236761 × 4274201 × 6013395151<10> × 32401295018849<14> × 40744808590081<14> × 6872363864819671<16> × 4164889456901862302881<22> × 15944803462923633762605952120076033<35> × [3691449268333533351248207738243146815663308627034530166544530220038172822244564769671129901407065720094123238483016271278335345013306064331766577570092831056594057041<166>] |