Base 20 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 438: | \[{20^{438}-1\over19}\] | 32 × 7 × 127 × 421 × 439 × 30223 × 80447 × 92419 × 164251 × 8140523 × 2991402761 × 4480852065367<13> × 6412324721641<13> × 5080516670789273543<19> × 14951607434498798145554889626044947483088978695769<50> × 8388017164299528473137529640945135276336333707655875659563939090886233451999<76> × [5225090119005772568382746081839535031229580984044159968500855727632452501454846623592530763321185545144410124387305670590392757108648510466939063665787121164118509644460771763<175>] × 293849346041079601993694433392794507898406345675750688702804145842061614258429611743222820727951516909534294693026144954405411290300478125640709243985354806206178017959614120866529<180> |