Base 19 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 129: | \[{19^{129}-1\over18}\] | 3 × 127 × 1033 × 1291 × 18917672548149688895557513<26> × 28461948730641665973894996037<29> × 36345637656251647357558267023272022549061<41> × 5086345414649205177826740885686300803862976717463015661252167<61> |