Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 304: | \[{7^{304}-1\over6}\] | 26 × 52 × 17 × 419 × 1201 × 12161 × 34961 × 72353 × 169553 × 351121 × 44118001 × 700197881 × 4058036683 × 1295161807633<13> × 4534166740403<13> × 1299254811081649<16> × 135214434686939513<18> × 2598696228942460402343442913969<31> × 1607340947755887662968675182499859543086664725995898838967199258809476675828571681548845723433052080229960977<109> |