Base 5 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 557: | \[{5^{557}-1\over4}\] | 634993369 × 606665375011622291<18> × 1331838958552407301<19> × 2083080172993122691257856555284532106406233081<46> × [49585685920639144894852615191223840568781864702641563165404193791855538353469412502670519649446082153519008198110041827196861418395044197056904160141108410295623464945595715729576035085697010786075454157915345252908791252721523377766314823414184252122882764930357313089068345334281989865549188443819<299>] |