Base 3 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 129: | \[{3^{129}-1\over2}\] | 13 × 431 × 4129 × 2199072289 × 380808546861411923<18> × 912851565662857110894244969<27> |
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 129: | \[{3^{129}-1\over2}\] | 13 × 431 × 4129 × 2199072289 × 380808546861411923<18> × 912851565662857110894244969<27> |