Base 3 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 666: | \[{3^{666}-1\over2}\] | 22 × 7 × 13 × 19 × 372 × 223 × 757 × 18427 × 94573 × 107671 × 13097927 × 18702169 × 25709599 × 56737873 × 78539161 × 119779213 × 1179099721 × 17189128703<11> × 93463940382121<14> × 64326272436179833<17> × 2628354173876461837<19> × 6962353413269964253<19> × 713529181090045029900916938579427981<36> × 50808749612587553507324600395708176734541295021<47> × 3552943040788863852841838506789344837191632515742882433271057428704799390413<76> |