Base 5 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 999: | \[{5^{999}-1\over4}\] | 19 × 31 × 109 × 149 × 271 × 829 × 1999 × 3109 × 4159 × 15319 × 31051 × 344145511 × 13971969971<11> × 966739015279<12> × 8737481256739<13> × 54928520946880307112306785731407655242899973469<47> × 11071665290671449530331408923856186107268916092023773607149<59> × 161379125529070529363563940022253349040025051224249445378347584044584532201078261<81> × [443037560681497641954568320222306622681202411243907098741905193940451536649334461293068922147162285059702191524526215118816655797867551415216623611053031043035980209396588031764616734988500325717647025197531700446348661506127364542588883769757242502520138238286073041866927947035507247560390358094978004196464323511065971109268920264239523821943387477533196267826741572436215089844009746824154595880178692927005627249008105035264418917681<438>] |