Base 4 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 365: | \[{4^{365}-1\over3}\] | 11 × 31 × 439 × 1753 × 8761 × 2298041 × 581874971 × 9361973132609<13> × 13828603741081<14> × 82595052745831<14> × 1795918038741070627<19> × 498386055746534779273231850742131<33> × 2494425222574733214339278396950946967011483971<46> × 25651395262318407934919734781737797067431285390452848441<56> |