Base 15 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 425: | \[{15^{425}-1\over14}\] | 11 × 4931 × 46751 × 1045002649 × 6734509609<10> × 7112705843777290751<19> × 150238480940066539268701<24> × 1737312434693929309175606904667659697444924171560401053012526469801639759361<76> × 148737727605380023575671249584542803416595270525903100843589847106729092444456688897196876808763352128131559088073254570233355735541251989432609580229842655841746472106457212445766998010447939876234541241570227120447775590409826195488779285954165324165277051547313530537948296795847953202957847396438081219767403671124369022590633858340431980647355021301<354> |