28729

Properties

Appears in sequences

• Primes with 22 as smallest positive primitive root.at n=7A061334
• Primes of the form 20*k^2 + 36*k + 17.at n=15A154419
• Primes of the form ((p+1)/2)^2+((p-1)/2), where p is prime.at n=29A163419
• Primes of form n^4 + n^2 - 1.at n=6A174819
• Primes which are the sum of three distinct positive cubes in two or more distinct ways.at n=27A180088
• Primes p such that p^2 divides 2^(2^(p-1)-1) - 1.at n=32A188465
• Primes of the form (k^2+4)/5.at n=33A245042
• Centered 18-gonal (or octadecagonal) primes.at n=23A264825
• Prime numbers p such that all prime factors of p+1 and p-1 are smaller than the cube root of p.at n=11A283791
• Ulam numbers k such that 4*k and 16*k are also Ulam numbers.at n=39A287634
• Primes of the form prime(n+2)*prime(n+1) - prime(n) +- 1.at n=25A294625
• Number of compositions of n whose standard factorization into Lyndon words has distinct strict compositions as factors.at n=21A299024
• Primes p such that q = p mod A001414(p-1) = p mod A001414(p+1) is prime.at n=28A339182
• Value of prime number D for incrementally largest values of minimal x satisfying the equation x^2 - D*y^2 = -5.at n=25A341083
• Value of prime number D for incrementally largest values of minimal y satisfying the equation x^2 - D*y^2 = -5.at n=24A341085
• Number of wedged n-spheres in the homotopy type of the neighborhood complex of Kneser graph KG_{3,n}.at n=15A342737
• Primes of the form p^4 + p^2 - 1 where p is prime.at n=2A347364
• Primes p such that, if q is the next prime, p + q^2 is a prime times a power of 10.at n=26A352837
• a(n) = Sum_{1 <= x_1, x_2 <= n} gcd(x_1, x_2, n)^4.at n=12A372926
• Prime numbersat n=3130