Base 15 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 204: | \[{15^{204}-1\over14}\] | 25 × 13 × 103 × 113 × 137 × 211 × 241 × 409 × 443 × 1123 × 3877 × 29173 × 712573 × 1022449 × 3496561 × 1045002649 × 3395062589 × 6734509609<10> × 101462866544971<15> × 608605859277144821<18> × 97406069823939953821<20> × 6432782079513712743495779579521<31> × 46006622624003587144520612100176336641<38> × 710631272168727982894395295277759599175209<42> |