Base 4 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 75: | \[{4^{75}-1\over3}\] | 3 × 7 × 11 × 31 × 151 × 251 × 331 × 601 × 1801 × 4051 × 100801 × 10567201 × 1133836730401<13> |
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 75: | \[{4^{75}-1\over3}\] | 3 × 7 × 11 × 31 × 151 × 251 × 331 × 601 × 1801 × 4051 × 100801 × 10567201 × 1133836730401<13> |