tables > repunit > 21

Base 21 Repunits

Table

Viewing: 278 – 278 << prev next >>

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Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>

278: 21278−120 2 × 11 × 4329622389913701641<19> × 109082531683019364259<21> × 4030571091345838215808589<25> × 687423001115670029908380379<27> × 1717466079724751615975579073185741<34> × 242224065084426595683370880085175862126081<42> × 248126091920645287176283880883366502408919085389410430715613361<63> × 635239496226648983853711535894519099902980213075405281503577524082602021376168250061303937317393992784565655062032185211749689140575805731<138>

Index range: 278 – 278 << prev next >>