47791

Properties

Appears in sequences

• Primes p such that x^27 = 2 has no solution mod p, but x^9 = 2 has a solution mod p.at n=23A059354
• Primes p such that x^54 = 2 has no solution mod p, but x^18 = 2 has a solution mod p.at n=14A059666
• Primes p such that x^9 = 2 has a solution mod p, but x^(9^2) = 2 has no solution mod p.at n=24A070185
• Primes p such that p-1 and p+1 are both divisible by fourth powers.at n=27A086709
• a(n) = Sum_{i=0..n} i*L(i), where L = A000032.at n=15A097039
• Numbers n such that 6*10^n + 4*R_n + 3 is prime, where R_n = 11...1 is the repunit (A002275) of length n.at n=22A103036
• Matrix logarithm of triangle A107719, read by rows.at n=30A107724
• Number of distinct values of the sum of 5 products of three 0..n integers.at n=21A225262
• Number of nX6 0..1 arrays with every element equal to 0, 1 or 3 horizontally or vertically adjacent elements, with upper left element zero.at n=6A301539
• Number of nX7 0..1 arrays with every element equal to 0, 1 or 3 horizontally or vertically adjacent elements, with upper left element zero.at n=5A301540
• Prime numbersat n=4926