Base 15 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 406: | \[{15^{406}-1\over14}\] | 24 × 7 × 59 × 1743463 × 2347493 × 10678711 × 219227821 × 221864077710117666600174298853<30> × 15476275967141572773889537007699<32> × 798962746803683694452047348022461<33> × 4160644974638642371709959199942326015844383664197999399283329338844967<70> × 448026720102756736717109678676466871871341298196157653510400943125401736391793097868345513170374805438097358521457356563<120> × 686557639226952509491990560619745745613283502603563978218051581450519720419466576330340133389873680160660384063585193683510376619794093051760793732959891030042409<162> |