Base 3 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 820: | \[{3^{820}-1\over2}\] | 23 × 52 × 112 × 61 × 83 × 821 × 1181 × 6971 × 31981 × 33703 × 1164811 × 2088869 × 2526913 × 110767897 × 86950696619<11> × 270547105429567<15> × 574933708017116710865237<24> × 6749930086876080531836671<25> × 3689786190483514868858729011531953642827230621<46> × 65601426257068882740808329269766819608728424724067187242117750270751<68> × 484817063231279957447153773078920893674467718855692821278540945218943780321<75> × 1332387631420321836382751259313541018246447121855134837464627606340327699261<76> |