Base 29 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
47: | \[{29^{47}-1\over28}\] | 283 × 659693 × 4440937 × 7823903 × 16200263293163<14> × 100338952626091<15> × 1830331915418999963<19> |