Base 31 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 475: | \[{31^{475}-1\over30}\] | 52 × 11 × 101 × 571 × 4951 × 14251 × 17351 × 13277801 × 793926617318201<15> × 20235942281002951<17> × 253443115236094501<18> × 88770666332610762169<20> × 8390657343355537461939601<25> × 291085900456038886134880893459441846658670815367779265015895596556789125915380655528060127881<93> × 365202112673936285480160506410908625953627830655318498981256919826528685726575655351943848012047414139838460757675563815826396304928120983441355394540564197220190202244857063179433487694247548319719383407509744943013300644375381849280670171021902585945108714075452397543747676872118714085427503400527558306435431142180434894700986749316347791799572491237449684211421169887381846830445657757619721411072052265310669945272673064906040984776928871448312682541944600608313172685450797982068125710301<495> |