Base 17 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
76: | \[{17^{76}-1\over16}\] | 22 × 32 × 5 × 29 × 229 × 457 × 1103 × 1559 × 2927 × 247381 × 312931 × 20352763 × 202607147 × 291973723 × 796699736849174247608318245316124490909<39> |