tables > repunit > 21

Base 21 Repunits

Table

Viewing: 21 – 21 << prev next >>

(available: 0-999)

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

21: 2121−120 43 × 463 × 631 × 3319 × 4789 × 6427 × 227633407

Index range: 21 – 21 << prev next >>