Base 10 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
54: | \[{10^{54}-1\over9}\] | 33 × 7 × 11 × 13 × 19 × 37 × 757 × 52579 × 333667 × 70541929 × 14175966169<11> × 440334654777631<15> |