Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 470: | \[{18^{470}-1\over17}\] | 11 × 19 × 41 × 2711 × 9041 × 16451 × 20681 × 468121 × 5203841 × 1077847241 × 1286609209 × 143487341521<12> × 2285450008636201610531032146080281<34> × 8694595042987947457948937711495049931245163<43> × 191336595444214846288678522856229507167887771<45> × 283000552804612324998031105442040281801013193565594903<54> × 170202099287152705626036559313114912305577576101806556945897477574690749173173409657166247790879151498576980994910089510451<123> × [881693390396513858982151197370117339951464898507786941667275673717281562609294813564284198089853697877901834103750205041541151854074491413337742547251189773384817446334327709342408365012241847978895364553683942953905304721601516751<231>] |