Base 11 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 321: | \[{11^{321}-1\over10}\] | 7 × 19 × 998311 × 1276033068038437<16> × 111525083440182079<18> × 565907075298149659147<21> × 297571581361738410622071889<27> × 2829934760722845283610290789677553<34> × 8094394036023237528697722819032319787<37> × 304971297664201988898688683700564748747693245597<48> × 690075192242979172401950662719273770411957106853<48> × 126254604881208933302550064321459995420291434842539889310748936368401340194407913<81> |