Regular prime
Type of prime number / From Wikipedia, the free encyclopedia
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Not to be confused with regular number.
In number theory, a regular prime is a special kind of prime number, defined by Ernst Kummer in 1850 to prove certain cases of Fermat's Last Theorem. Regular primes may be defined via the divisibility of either class numbers or of Bernoulli numbers.
Unsolved problem in mathematics:
Are there infinitely many regular primes, and if so, is their relative density ?
The first few regular odd primes are: