Base 26 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
56: | \[{26^{56}-1\over25}\] | 33 × 17 × 29 × 712 × 113 × 677 × 4733 × 26881 × 59011 × 748217 × 321272407 × 16947835297<11> × 694230517093<12> × 6355345293012073<16> |