Base 3 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 308: | \[{3^{308}-1\over2}\] | 23 × 5 × 23 × 29 × 67 × 547 × 661 × 1093 × 3851 × 5501 × 16493 × 570461 × 51457561 × 7151459701<10> × 76831835389<11> × 671352452318708161<18> × 56495392933101222275861053369<29> × 2974112460006073547613794168096436806641<40> |