Base 19 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 555: | \[{19^{555}-1\over18}\] | 3 × 31 × 127 × 149 × 151 × 211 × 223 × 911 × 108041 × 109891 × 1613497 × 2460181 × 5527801 × 5200884133<10> × 3588174588084451<16> × 7294818419812981<16> × 83431114206443974081<20> × 21406757809476033811281103559<29> × 43362674546975709030616887931<29> × 98918321488381663684842786916140757<35> × 601747857487647752841552735084217713871<39> × 121185043059164603839638479972378301818705215628051892060221982921848038511472362793241389632582146900500976007478202113384473382799053957273531987976906970860041506845189943413721<180> × [12574234536774600883266789156848557584356939442602239782823239576537860628688539443478293643410323612637569188049827143041619269678270748624462709438671825993911384498214676404282101591803544116958986721874959794447379846733424164675149849273739498633237281392839107200863303669438433923029141<293>] |