Base 10 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 87: | \[{10^{87}-1\over9}\] | 3 × 37 × 3191 × 4003 × 16763 × 43037 × 62003 × 72559 × 77843839397<11> × 310170251658029759045157793237339498342763245483<48> |