Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 416: | \[{7^{416}-1\over6}\] | 27 × 52 × 17 × 53 × 157 × 313 × 353 × 1201 × 169553 × 41237249 × 85094881 × 228511817 × 16148168401<11> × 47072139617<11> × 1195857367853217109<19> × 17712988461899423081645348353<29> × 1377454635342537460935008154217<31> × 905547932264861071666229565143230129859275489<45> × 76053626281572299980201419323699150165495621951615617<53> × 48598465250516107348653297226391331535731426114673091761869099786752201815205996269820940667683284830723313441<110> |