Base 31 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
60: | \[{31^{60}-1\over30}\] | 26 × 3 × 5 × 72 × 11 × 13 × 19 × 37 × 41 × 61 × 181 × 331 × 2521 × 17351 × 21821 × 25621 × 922561 × 1529401 × 327412201 × 4707206941<10> × 304643210761<12> × 880374069121<12> |