Base 4 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 77: | \[{4^{77}-1\over3}\] | 23 × 43 × 89 × 127 × 617 × 683 × 78233 × 35532364099<11> × 581283643249112959<18> |
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 77: | \[{4^{77}-1\over3}\] | 23 × 43 × 89 × 127 × 617 × 683 × 78233 × 35532364099<11> × 581283643249112959<18> |