Base 31 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 102: | \[{31^{102}-1\over30}\] | 25 × 3 × 72 × 19 × 103 × 331 × 1961163283 × 2796214962413636917873<22> × 6841661642646463343047<22> × 751670559138758105956097<24> × 195333779873358973907838097<27> × 261116663697161542351918133573442849307<39> |