Base 17 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 218: | \[{17^{218}-1\over16}\] | 2 × 32 × 2399 × 5669 × 18313 × 81429323 × 1079613990310607925001081696544439430730786087<46> × 25433824402380432988461050283974738838510040104186488783881902809<65> × 134700910421215223274889759553545746360536401580001277417261258891<66> × 800469234670546385535830424671357689036532514085285675553023734215860313<72> |