Base 11 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
66: | \[{11^{66}-1\over10}\] | 22 × 32 × 7 × 19 × 23 × 37 × 67 × 89 × 199 × 661 × 1453 × 9439 × 15797 × 58367 × 991651 × 1806113 × 1169382127 × 637265428480297<15> |