Base 20 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 342: | \[{20^{342}-1\over19}\] | 33 × 7 × 19 × 127 × 229 × 307 × 421 × 6841 × 69481 × 64008001 × 75368484119<11> × 109850818001<12> × 192696104561<12> × 222155207347<12> × 1374892397251<13> × 2272727294381<13> × 68465688966343<14> × 123686351818586101<18> × 693371183978144761<18> × 207373637974370334920244263016739<33> × 187264653764095586664819173388580537613342284054996019397698915269<66> × 1732724154386392878105444638522339285040431386224361108901067218292376986829<76> × 2624049571395227094350842697544763244560955715104840326410019051906904001036897683089776706797652927650450436213910004831901<124> |