Base 31 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 355: | \[{31^{355}-1\over30}\] | 5 × 11 × 2131 × 17351 × 17609 × 18461 × 218681 × 1954879211 × 4413696466871<13> × 611127785361198601<18> × 642443809919609072204778169817<30> × 37141302977105581064921322418772202338727337015016057<53> × [49712057148351602935372445564089025165974218270945215408960674844520895555310076824161819347035704380314404105117155669214045162921744723089391856410969471429612540238448387759006668373431889421032646130913655488311980588936124374988762008943084203849166736635889597910244781138013420929614978537434744554513388317025146336075056521791221290922467333643543912478185360436812641501051<383>] |