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vor 1 Jahr | |
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LCM primes | vor 3 Jahren | |
Primes p such that consecutive lcm +- 1 is prime | vor 3 Jahren | |
Smallest number m with n ones in sqrt cfrac expansion | vor 3 Jahren | |
Smallest prime p such that the Mersenne number A000225(p) = 2^p - 1 has exactly n prime factors (counted with multiplicity) | vor 1 Jahr |