Base 16 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 353: | \[{16^{353}-1\over15}\] | 931921 × 541028249071570661<18> × 2927455476800301964116805545194017<34> × 363408425861746508790313639089881017<36> × 3803909572078746837295094051706948091<37> × 18663948642922687016174767992032753930412466248116369<53> × 6725414756111955781503880188940925566051960039574573675843402666863<67> × 1607818533384485707707842837146335251451162017762519557029955613946641<70> × 18347988927920572092886567162416695526372519913346248798338768106859275713914500070771500472538615219486721<107> |