If I here
https://primes.utm.edu/primes/search.php
enter $30$ at the last field, I should get the $30$ largest known primes. Apparently, the $28$ th largest known prime is missing. Is this an error in the database , or do I miss something ?
2026-04-07 06:14:01.1775542441
$28$ th largest known prime missing in the prime page database?
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It is a glitch in the way the primes are pulled out of the database. Download the list of the top 5000. You get:
$26: 3*2^{11484018}-1$
$27: 193997*2^{11452891}+1$
$28: 2877652^{524288}+1$
$29: 2788032^{524288}+1$
$30: 2733014^{524288}+1$
Same primes, but now correctly labelled.