87913

Appears in sequences

• Strong pseudoprimes to base 3.at n=20A020229
• Strong pseudoprimes to base 11.at n=23A020237
• Strong pseudoprimes to base 33.at n=20A020259
• Strong pseudoprimes to base 99.at n=36A020325
• Composite numbers k such that (1 - w)^(k-1) == 1 (mod k) in the ring of Eisenstein integers (w = (-1 + sqrt(3)*i)/2).at n=34A329705
• Composite numbers k == 1, 11 (mod 12) such that 3^((k-1)/2) == 1 (mod k).at n=26A375917