Base 28 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
46: | \[{28^{46}-1\over27}\] | 29 × 47 × 115152031 × 140668620541<12> × 4099849287367<13> × 1517655145813456319033978812579<31> |