Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 550: | \[{7^{550}-1\over6}\] | 23 × 112 × 23 × 191 × 331 × 1123 × 2311 × 2551 × 2801 × 3301 × 38501 × 293459 × 2864401 × 10746341 × 31280679788951<14> × 390042354509501<15> × 7840815905526451<16> × 79787519018560501<17> × 2429297864813474051<19> × 5457586804596062091175455674392801<34> × 13108478445679585187945846562792720732451<41> × 152254207931524870640907264181257222395351<42> × 2157644074550275307484702004222152061719537437027830110852488340087151<70> × 8125994956383448908175813625515974488327425828122240561462603005305930529130665921446324325849855319570169457843970801756470732764219110872458796933201<151> |