55381

Properties

Appears in sequences

• Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 18.at n=24A031606
• Multiplicity of highest weight (or singular) vectors associated with character chi_179 of Monster module.at n=40A034567
• Prime number spiral (clockwise, Northwest spoke).at n=37A053999
• Primes which yield a prime whenever a 1 is inserted anywhere in them (including at the beginning or end).at n=28A069246
• a(1)=2; for n>1 a(n) is the largest prime number m such that a(n-1)^(1/(n-1))>m^(1/n).at n=25A086566
• Primes from merging of 5 successive digits in decimal expansion of cos(1).at n=7A104961
• Primes p such that p + googol is prime.at n=34A108250
• Partial sums of orders of finite perfect groups (A060793).at n=27A121513
• a(n) = prime(A003593(n)).at n=27A334276
• Prime numbersat n=5625