Base 17 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
90: | \[{17^{90}-1\over16}\] | 2 × 34 × 7 × 11 × 13 × 19 × 31 × 71 × 101 × 307 × 1423 × 3691 × 5653 × 33931 × 88741 × 316531 × 1270657 × 1674271 × 238212511 × 2220161311 × 5113320301<10> × 6566760001<10> × 152924817473166888991<21> |