Base 19 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 646: | \[{19^{646}-1\over18}\] | 22 × 5 × 647 × 4523 × 108301 × 523261 × 1049219 × 3044803 × 15428419 × 674508925099<12> × 870542161121<12> × 99995282631947<14> × 111570448294819<15> × 274019342889240109297<21> × 109912203092239643840221<24> × 772212545997879355722917<24> × [2976052126208593792930759700985961451128169098257250160806710394586331004515782390182275639952950114283986579696437059462739615350975888333751402169549580725859321<163>] × [19883084742599703431382221472213428715627938690366494069364556304300329473670988950398628675250487830165526253138549234819436650817083775583563067417260058799858375439<167>] × [447817187924186276761133577286586578114562316541292142819594513277003122546608593179153618339013721406734343099246484358715847428127410685428758675706118026873669096041166812510865483960760663177484483579922379435836502638143493015201613754254955849992692855645485546781344048127648300488381811742678613539004854312315626352767690922749233<339>] |