Base 4 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 485: | \[{4^{485}-1\over3}\] | 11 × 31 × 971 × 1553 × 11447 × 31817 × 10084875238121<14> × 1100876018364883721<19> × 13842607235828485645766393<26> × 34224064338126003049783351<26> × 6424414731245950286450458211761<31> × 9171512050413471978823535677986962353938006401<46> × 11238344415062964442147243324272630868644399851<47> × 5099684339280531431303325210885366883096347229374376914106957559915561<70> |