Base 13 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 308: | \[{13^{308}-1\over12}\] | 22 × 5 × 72 × 17 × 23 × 29 × 419 × 859 × 5281 × 7393 × 18041 × 22079 × 1702933 × 5229043 × 78947177 × 150324329 × 128011456717<12> × 23161037562937<14> × 718377597171850001<18> × 3577574298489429481<19> × 624958606550654822293<21> × 4209006442599882158485591696242263069<37> × 10138828706452319901511087969019211193701892213<47> × 93637370570179669255549864038765546686618457045468405227057<59> × 8282941254056679440230919848638538275392852503987024524308729<61> |