Base 10 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
197: | \[{10^{197}-1\over9}\] | 52009 × 79040479805615687465683<23> × 3599474961483053310878605135585111374469138078226023233589649293<64> × 750914105302558436752000930239222531800507092216032215426336586609291356367521996611125219417012181327241<105> |