327781

Appears in sequences

• Strong elliptic Carmichael numbers for the elliptic curve y^2 = x^3 + 80.at n=1A290339
• Numbers k > 2 such that 3^(k-1) == 1 (mod k) and gcd(k, 2^(k-1)-1) = 1.at n=9A306144
• Numbers k such that there exists i >= 1 such that k divides 3^3^i - 1.at n=37A367265