Base 14 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 406: | \[{14^{406}-1\over13}\] | 3 × 5 × 59 × 13109 × 36947 × 7027567 × 8108731 × 25581350023<11> × 114221024581<12> × 31642048839402569<17> × 396530555859061913<18> × 816608571839479231<18> × 2664226106586923257<19> × 17101086842968403641<20> × 2576467033510772674553609812079<31> × 3790912460929710006342243107460185904926449<43> × 1279796312524198783959026179698128589697724026090831813828577<61> × 5647487221020667285052334888031316127953134966007009262426928808527<67> × 69599365372907988991031984039240171835801763708367735828280978145101173503200169874150258936667969998681159921905818046424316289<128> |