Base 5 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 76: | \[{5^{76}-1\over4}\] | 22 × 3 × 13 × 191 × 761 × 6271 × 19609 × 213029 × 3981071 × 4885168129<10> × 2864226125209369<16> |
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 76: | \[{5^{76}-1\over4}\] | 22 × 3 × 13 × 191 × 761 × 6271 × 19609 × 213029 × 3981071 × 4885168129<10> × 2864226125209369<16> |