Base 15 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 620: | \[{15^{620}-1\over14}\] | 25 × 11 × 312 × 113 × 311 × 1531 × 1861 × 4931 × 5581 × 19421 × 20089 × 131381 × 856469 × 958459 × 12871001296201<14> × 1179145519632511<16> × 14572134604887829<17> × 23101103879706781<17> × 2680375722923963821<19> × 18167443254760948901<20> × 530788252571672548054451<24> × 660603097954354915026956925328631<33> × 7796596693066108353768510939297706833721<40> × 117107805549292247865914823046429217019361<42> × 6879022048891933664493038234937096016443431299080285798525470822702228981159231<79> × 2718934196155269510555392356657808940525408488924074244124311145808723525426158421<82> × [1835811535235627048402907652563922383771034468356727622196540850889045827653865906210503543966535732789047402575235824076426495406987727102668011078928184938758865587437824796408022076585715656710953763292838038238493261939086260534332753200242519944399333517666495704615923349609601<283>] |