Base 19 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
58: | \[{19^{58}-1\over18}\] | 22 × 5 × 59 × 233 × 106373 × 297003021451861<15> × 670650007983077<15> × 8501529971051629<16> × 165049085515149863<18> |