Base 13 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
142: | \[{13^{142}-1\over12}\] | 2 × 7 × 6959 × 12923 × 201499 × 532615479720542238328159944384931<33> × 1649818592952900908784269998191033146612006407<46> × 56573583882629131201397586942443243853379490390398336588076200421<65> |