Base 5 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 410: | \[{5^{410}-1\over4}\] | 2 × 3 × 11 × 71 × 83 × 521 × 821 × 15991 × 43543 × 221401 × 2175461 × 2238236249 × 1256950067521<13> × 33996220923281<14> × 9472026608675509<16> × 24834433083178321<17> × 5079304643216687969<19> × 3788285672971032867364321<25> × 9353066485119999732284835819085027408231<40> × 1436881369899172813331496702637026412971521496281<49> × 29126077906797054524253118878873401242767428008603378081<56> |