Base 15 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 414: | \[{15^{414}-1\over14}\] | 24 × 19 × 47 × 139 × 211 × 241 × 541 × 739 × 811 × 829 × 967 × 1381 × 6257 × 21061 × 31741 × 81421 × 825287 × 434956681 × 3549551867 × 56704874959<11> × 80732172121<11> × 3046462151831565769<19> × 874125097494737469067<21> × 153908199071740625749971976183<30> × 31096175767640183484106599269134482322375555399<47> × 1322571104457879790843665431799529759992302582488293210311112541<64> × 151678797433364261160746552891204761097070118948177401139453837480455583<72> × 3094243298472173981415326686642220472525491226480242445404204462434312834668247994020581579563104910071447035468338088365747639889655732033743439<145> |