Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 506: | \[{7^{506}-1\over6}\] | 23 × 232 × 47 × 1123 × 3083 × 69829 × 293459 × 4603589 × 10746341 × 1106436299 × 5380969463<10> × 31479823396757<14> × 3421093417510114543<19> × 87651725748382316057189535841942531128897032047<47> × 35764102873412466090911077602159546824955533626915413469<56> × 273576978607470033153046107690021380972912312023178038734564879829916467740358357790158969622721194564313043424143943<117> × 18082074864415377367068243954486555860740228320949232027155050843447259982906797331116646925519623217698584465005700448879<122> |