Base 19 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 400: | \[{19^{400}-1\over18}\] | 25 × 53 × 11 × 17 × 41 × 101 × 151 × 181 × 401 × 911 × 1201 × 1601 × 2251 × 3833 × 6451 × 15073 × 18401 × 79151 × 127051 × 392201 × 563377 × 2772481 × 7471601 × 14976001 × 232894201 × 478382041 × 14706033761<11> × 16936647121<11> × 35184941201<11> × 675303194549101<15> × 747596648084101<15> × 20641111497065201<17> × 36035657195482151<17> × 590165627314172101<18> × 3545449651653764401<19> × 30008663379835140331261614092712001<35> × 54700570965962869458608798408798215536067704001<47> × 1877083456005256380006767250081941174427400881724291237726168001<64> × 1178401180663068040652905797899294337318454423389969321283652761172954914030788565174792248340878962749619632265057814077348372381201<133> |