182527

Appears in sequences

• Strong pseudoprimes to base 3.at n=28A020229
• Strong pseudoprimes to base 95.at n=31A020321
• Pentagonal numbers (A000326) that are also brilliant numbers (A078972).at n=20A113941
• Numbers k that are the products of two distinct primes such that 2*k-1, 4*k-3, 8*k-7, 16*k-15, 32*k-31, 64*k-63 and 128*k-127 are also products of two distinct primes.at n=22A177216
• The products k of two distinct primes such that 2*k-1, 4*k-3, 8*k-7, 16*k-15, 32*k-31, 64*k-63, 128*k-127 and 256*k-255 are also products of two distinct primes.at n=9A177217
• Semiprimes of the form n*(3*n-1)/2.at n=34A245365
• Semiprimes of the form (4*n + 1)*(6*n + 1) = 24*n^2 + 10*n + 1.at n=13A255584
• Numbers k > 2 such that 3^(k-1) == 1 (mod k) and gcd(k, 2^(k-1)-1) = 1.at n=5A306144
• Composite numbers k == 5, 7 (mod 12) such that 3^((k-1)/2) == -1 (mod k).at n=12A375918