Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 503: | \[{7^{503}-1\over6}\] | 147648126127<12> × 6756824600689<13> × 86425282925893<14> × 4692679782813091<16> × [50018488306478105494585397163389108662742649756122475110577408530915309471642819081935803469277175440793192270100901649418283879032802606016907538753663984140972600871066928754534473880296401070659394467153775721785502355619638609245953134146484735123540533824427117830473935186940610447757808028981222841085728687732178954059951521169620426637246196844528056885574066713<371>] |