Base 3 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 410: | \[{3^{410}-1\over2}\] | 22 × 112 × 61 × 83 × 6971 × 31981 × 33703 × 1164811 × 2526913 × 86950696619<11> × 270547105429567<15> × 6749930086876080531836671<25> × 3689786190483514868858729011531953642827230621<46> × 65601426257068882740808329269766819608728424724067187242117750270751<68> |