Base 5 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 64: | \[{5^{64}-1\over4}\] | 26 × 3 × 13 × 17 × 313 × 641 × 2593 × 11489 × 29423041 × 75068993 × 241931001601<12> |
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 64: | \[{5^{64}-1\over4}\] | 26 × 3 × 13 × 17 × 313 × 641 × 2593 × 11489 × 29423041 × 75068993 × 241931001601<12> |