Base 4 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
890: | \[{4^{890}-1\over3}\] | 52 × 11 × 31 × 41 × 179 × 1069 × 2671 × 7121 × 87221 × 1153441 × 62020897 × 131865932411<12> × 18584774046020617<17> × 98672095457750041<17> × 40853155149612675915761<23> × 579017791994999956106149<24> × 123794003928545064364330189<27> × 618970019642690137449562111<27> × 559141875690047602223196407174620966113027521<45> × 1460384540571001412284141831845453026637206635511<49> × 63643804696414042988834224561445803731525698977141<50> × 1213879697009617667840625625239307278583085260903037111<55> × 347845646370185161095967265379428963144557189176373959511073050525241<69> × 297518585659725800133717615262210026192247517437901418982937846097045544005437712492264661<90> |