Base 23 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 255: | \[{23^{255}-1\over22}\] | 7 × 79 × 103 × 1021 × 42331 × 292561 × 78267151 × 72992243971<11> × 74912328481<11> × 464325697441<12> × 18761435261131<14> × 822450694563461<15> × 62246266355102810647<20> × 849890089913739257948662758708499908691<39> × 620136916371793898240542969807652684093441<42> × [109179374247652227106485636901139730546170715703831833424653843880377293960516746314288226382553781686520871066889618718200812913332812990429351406198755752031<159>] |