Base 5 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 480: | \[{5^{480}-1\over4}\] | 25 × 32 × 7 × 11 × 13 × 17 × 31 × 41 × 61 × 71 × 97 × 181 × 241 × 313 × 521 × 601 × 1741 × 2281 × 2593 × 7621 × 9161 × 11489 × 25601 × 390001 × 29423041 × 69566521 × 131349761 × 632133361 × 2172116161 × 152587500001<12> × 167597261761<12> × 909456847814334401<18> × 240031591394168814433<21> × 23320317172851318360001<23> × 24625444126052524088217281<26> × 249573426944146284704352710315893441<36> × 582954476493740838084778148633415817921<39> × 504110697416787256482965615383149818328388849980481<51> |