48049

Properties

Appears in sequences

• Third row of Pascal-(1,7,1) array A081582.at n=39A081593
• Primes of form n.0.n+1, where '.' represents concatenation. Or, primes of form 10^(k+1)*n + n + 1, where k is the number of digits in n.at n=6A096525
• a(n) = 50*n^2 - 1.at n=30A157919
• Prime numbers with gaps larger than 18 towards both neighboring primes.at n=35A163111
• Primes p such that p + 4, p + 16, p + 64, p + 256 and p + 1024 are all semiprimes.at n=38A241493
• Number of partitions of n such that (number parts having multiplicity 1) is a part or (number of 1s) is a part.at n=43A241510
• Primes p such that the maximal length of a nontrivial N(p)-Hensley sequence mod p is less than the value of A124882 for that prime, where N(p) is the least positive quadratic non-residue mod p.at n=20A261405
• Centered 16-gonal (or hexadecagonal) primes.at n=31A264823
• Prime numbers p such that all prime factors of p+1 and p-1 are smaller than the cube root of p.at n=22A283791
• Prime k with sigma(sigma(sigma(k))) < 3*k + 1.at n=20A320517
• Value of prime number D for incrementally largest values of minimal x satisfying the equation x^2 - D*y^2 = -5.at n=33A341083
• Value of prime number D for incrementally largest values of minimal y satisfying the equation x^2 - D*y^2 = -5.at n=32A341085
• Primes having only {0, 4, 8, 9} as digits.at n=26A386076
• Prime numbersat n=4950