38711

Properties

Appears in sequences

• Primes p such that x^49 = 2 has no solution mod p, but x^7 = 2 has a solution mod p.at n=12A059667
• Balanced primes of order nine.at n=22A096701
• Primes p such that p+2, p^2 - 2p + 2, and p^2 - 2p + 4 are all prime.at n=17A101315
• Primes p such that continued fraction of (1 + sqrt(p))/2 has period 16 : primes in A146339.at n=17A146361
• Noncomposite numbers in the southern ray of the Ulam spiral as oriented on the March 1964 cover of Scientific American.at n=24A168027
• Primes of the form floor(binomial(k,2)/4).at n=42A171574
• Primes p of the form 4*k+3 such that p+2 is prime and p-1 is nonsquarefree.at n=33A175606
• Records in A177930.at n=13A177932
• Primes of the form 5n^2 - 9.at n=15A201790
• Principal diagonal of the convolution array A213590.at n=8A213504
• Primes p with p + 2, prime(p) + 2 and prime(prime(p)) + 2 all prime.at n=8A236481
• Initial members of prime quadruples (n, n+2, n+36, n+38).at n=23A248367
• Numbers that divide exactly two Euclid numbers.at n=31A297891
• a(1) = 1; a(n) = -Sum_{k=1..n} a(k/gcd(n,k)).at n=36A343762
• List of graphs that are squares, encoded as in A382754.at n=41A382761
• Prime numbersat n=4079