Base 3 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 489: | \[{3^{489}-1\over2}\] | 13 × 107581 × 5227348213873<13> × 8882811705390167<16> × 6351885141964057411259499526611848626072045955243<49> × 248799847276750112051987181830555476011225829743745769088988696415700926912242398570439592596492295941044800988653984249495592713645064331019158574269<150> |