Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
105: | \[{18^{105}-1\over17}\] | 74 × 31 × 41 × 71 × 449 × 601 × 2711 × 3361 × 26881 × 80207 × 558721 × 4274201 × 50451031 × 156107192084257<15> × 6391293850256281<16> × 4164889456901862302881<22> × 65081321032032689150122343401<29> |