Base 5 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 439: | \[{5^{439}-1\over4}\] | 1031865461192099<16> × 677725117273121779<18> × 1567744952609398205028484317631<31> × 80664822123021379747650436675623374414348912550454233093709<59> × 19912952747977597490467682974918700835033919042472793219933427201134448196875216857023094171578363665617677166321551471721704945086881129539504280179361742352404114202690430353921526209<185> |