Base 20 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 162: | \[{20^{162}-1\over19}\] | 35 × 7 × 109 × 127 × 163 × 307 × 421 × 4483 × 69481 × 64008001 × 99672121 × 150773239 × 879338701 × 1794112741 × 298114935351301<15> × 7599707813206155097384225291<28> × 15721667458073376459082354447584949<35> × 36839260755586879345603271983640081525117120654396728016359918200409<68> |