Base 28 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 242: | \[{28^{242}-1\over27}\] | 232 × 29 × 11617 × 70423 × 401237 × 6012491 × 6077039 × 50545507 × 540610746853<12> × 821712594553489<15> × 2510904286447886473<19> × 334379886633189962093<21> × 6046830224300802402489629<25> × 370660969097934421878960944564508608719653458904805255649830292044503755466433903783847<87> × 776619141017186710035065396662865348818131688201730153303152473231791048560648849827183882229705920893544088502626565657055559018471<132> |