Base 20 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 425: | \[{20^{425}-1\over19}\] | 11 × 61 × 151 × 251 × 1451 × 53551 × 141101 × 1369801 × 2230061 × 7466201 × 46794901 × 455851601 × 565393651 × 18510970711<11> × 36372797968360681<17> × 126433576549825993751<21> × 689852631578947368421<21> × 2025046074983629951481<22> × 4556238142862133239706708620401<31> × 47466646684571365086953218254001<32> × [67493415030303834664652834591893452784182422408713838517198115604730861746569608035407534234937904303330645892725285570948782990027317001866881601<146>] × [3425259679305305696178151685838936966491610793065455546373017629255596955396099864063382647832472603200823166921319445556994164298405538119414564517121939810570041254109350763775452042128201<190>] |