Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 873: | \[{7^{873}-1\over6}\] | 32 × 19 × 37 × 389 × 971 × 1063 × 4657 × 24464953 × 134002009 × 205245793 × 951340693 × 1776521827 × 23363930803<11> × 2387967319259461<16> × 588884936839088389773662393029<30> × 11089767531884977816638380462821<32> × 17222352999891656035251217320770460421529616882638178794739485897363407<71> × 4160924156784953821413999107825795646911807584554735726748631757909547764679<76> × [279759902892425148430655052622276960101645468167909869565280484767259751368937486081070351554883643474943842614227156876121245154411988225367846788951364210643985475266978358935894166203294557354673354377649693605871618695533969603465240705036756286434121479641272065904828169112310769626363195491227562431662332186263879956080158361767114051898682263011934395063435234048111540733495671638062904386369335588360047764336677440854695877856175660327<447>] |