Base 4 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 544: | \[{4^{544}-1\over3}\] | 5 × 172 × 137 × 257 × 641 × 953 × 5441 × 15233 × 26317 × 43691 × 65537 × 131071 × 143617 × 354689 × 383521 × 6700417 × 443069456129<12> × 2368179743873<13> × 2879347902817<13> × 373200722470799764577<21> × 335631827046798245410603730138717057<36> × 63406006407727721042109834220642811713<38> × 13832308777821275253693797139501737778822147478083036956843427808440807495351394287484032432976653684838265205956643879584820178416769<134> |