Base 15 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 230: | \[{15^{230}-1\over14}\] | 24 × 11 × 31 × 47 × 829 × 1151 × 1531 × 4931 × 6257 × 31741 × 53591 × 81421 × 100511 × 825287 × 9935311 × 2083752851 × 3549551867 × 12203077111<11> × 740265963181<12> × 4088280880261<13> × 3046462151831565769<19> × 47259785976796262161<20> × 8264999210340600150541<22> × 42460920908092999453501<23> × 17616646658610304480313635124812321<35> × 705786845852111541108444074560195096202278621<45> |