Base 19 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 520: | \[{19^{520}-1\over18}\] | 24 × 52 × 11 × 17 × 41 × 53 × 131 × 151 × 181 × 313 × 521 × 599 × 911 × 2251 × 2393 × 3833 × 5981 × 7177 × 29251 × 96851 × 176021 × 291331 × 38324521 × 52356721 × 133338869 × 153079681 × 478382041 × 1213680521 × 14706033761<11> × 16936647121<11> × 23745827041<11> × 1125238514401<13> × 37155843312641<14> × 69034016679735329<17> × 26032499911030239744521<23> × 77685006382386461342123321<26> × 92174159182574048847888178637<29> × 764224739004587705859669872633651<33> × 325171039458979361506040909686733801<36> × 20240476166390259493325765865267467809<38> × 29742009376601733041746528172368311797231415121778161<53> × 3246406890499709418302441719934790054581965549380209299454146173701<67> × 20294470427657805741842317234580706691548172499381723182834000407933369759914349346212863887643822617935517995689494898725096268099562642501853617463955255451622487739585852841<176> |