Base 3 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 216: | \[{3^{216}-1\over2}\] | 24 × 5 × 7 × 13 × 19 × 37 × 41 × 73 × 109 × 433 × 757 × 2161 × 6481 × 8209 × 15121 × 19441 × 19927 × 530713 × 10512289 × 16569793 × 282429005041<12> × 3958044610033<13> × 150094634909578633<18> |