Base 22 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 217: | \[{22^{217}-1\over21}\] | 7 × 16968421 × 3592159411 × 3760153822731937<16> × 7345633618119786277<19> × 5464220413673727340561927632817<31> × [1495010653179603006969875554769996905359814479055992295908891148375442755487802466781700044223755193655915633425165515091415322373911165676569029892538064309430025190378388318061810310215177376867210068565231<208>] |