Base 10 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 153: | \[{10^{153}-1\over9}\] | 32 × 37 × 307 × 613 × 18973 × 210631 × 333667 × 2071723 × 11910133 × 52986961 × 5363222357<10> × 25332185271529<14> × 13168164561429877<17> × 41331541464123787<17> × 13753721844250167674053932561585423251305429858083649<53> |