Base 20 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 460: | \[{20^{460}-1\over19}\] | 3 × 7 × 11 × 41 × 47 × 61 × 251 × 401 × 461 × 691 × 1381 × 2801 × 3221 × 152381 × 222361 × 563041 × 15899671 × 393682721 × 711976961 × 1187631911 × 6373576093<10> × 2171940587581<13> × 2876068236841<13> × 10725299405489<14> × 3274400525856244223<19> × 46266279097921483078651<23> × 7938685883284687902899551<25> × 25671002444875098778617582252548213<35> × 12455737105357889079298653975123812321<38> × 10777723802249858892664012252630187395225251961<47> × 7121307273752901983750606756745314224670092894931<49> × 423482815190164773087754922424574131424226119864444877189501<60> × 268037154666663325984991102727168298254323527315714715619137998664543876554357097638587786726037940092089981120087411522324298627015198203242552670536230117605017014732316322324041<180> |