Base 31 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 189: | \[{31^{189}-1\over30}\] | 33 × 43 × 127 × 331 × 3637 × 6301 × 8317 × 70309 × 81343 × 917087137 × 75077698123<11> × 1836205027201<13> × 2813432694367<13> × 126901881805771<15> × 175189978713624355909<21> × 657178775852071573297<21> × 71835175787606447597649606493<29> × 728921581954037396189325850537700569<36> × 1696548520660409378170104364218967269767457201671658656559052140932537408460653130383317<88> |