Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 441: | \[{18^{441}-1\over17}\] | 75 × 127 × 449 × 631 × 991 × 2143 × 34327 × 80207 × 101921 × 1292257 × 19148809 × 24487849 × 32401295018849<14> × 156107192084257<15> × 1938069444550807<16> × 32841385311481559569<20> × 6974796889885559915764172408527<31> × 15944803462923633762605952120076033<35> × 20684766401518363796396833811720566410775404979640152761413256241131578671440317871550774360898623<98> × [13675079024762036820084878987324992435302362297031732572348237694343906574979293787928038310666056152785639776890386368660476925537969763797891234125373962444284906024858113280945181057508262060013358844610157698365904838526426048953690128395734306909396173129102430218020447<275>] |