Base 4 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
443: | \[{4^{443}-1\over3}\] | 887 × 48731 × 489333371 × 207818990653657<15> × 2036829768181123<16> × 203369567047358792597230853956871186267775970073<48> × 766506724027386556749116942627320053266817922278079798057<57> × 123219439267346362049744425289349676468781136823956005602631224069302162695430546376768705960936201429580820215522273<117> |