Base 5 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 275: | \[{5^{275}-1\over4}\] | 112 × 71 × 101 × 251 × 401 × 103511 × 233201 × 511831 × 9384251 × 12207031 × 65628751 × 190295821 × 1234133939501<13> × 354655233566701<15> × 23785874550224051<17> × 29881163609373451<17> × 43877290026688801<17> × 263235486450437228201<21> × 74244097395602258857646710053170733601<38> |