Base 13 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 440: | \[{13^{440}-1\over12}\] | 23 × 52 × 7 × 112 × 17 × 23 × 41 × 89 × 419 × 421 × 601 × 641 × 661 × 859 × 881 × 2411 × 2861 × 5281 × 6073 × 14281 × 18041 × 29881 × 30941 × 39161 × 53681 × 4476745241<10> × 128011456717<12> × 543124566401<12> × 4439770467824561<16> × 13545148572117361<17> × 3577574298489429481<19> × 4122652482568228291<19> × 159781905331924011841<21> × 202254724516962030101<21> × 8603427927040724342317061<25> × 668229430151772307653060812800711311233<39> × 154108679648629234086317526808157310299027561<45> × 221090330333352121547996226952843328713749836425081<51> × 1310880346759943070510045925019763909067493316336961<52> × 545468103945786091829627950927853050773757212471651959642609899801<66> |