Base 5 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
241: | \[{5^{241}-1\over4}\] | 79531 × 578401 × 882061 × 464913101 × 128338427949683383916242111<27> × 23296571833941039118079506609079<32> × 1054929344030207429836604785995221<34> × 11890580692401906619384191134004411847026907908776759<53> |