117215

Appears in sequences

• Lucas-Carmichael numbers: squarefree composite numbers k such that p | k => p+1 | k+1.at n=27A006972
• Odd numbers k that divide Lucas(k) + 1.at n=31A094399
• Positive numbers y such that y^2 is of the form x^2+(x+119)^2 with integer x.at n=40A156650
• Lucas-Carmichael numbers with 4 prime factors.at n=7A216926
• Chebyshev pseudoprimes to both base 2 and base 3: composite numbers k such that T(k, 2) == 2 (mod k) and T(k, 3) == 3 (mod k), where T(k, x) is the k-th Chebyshev polynomial of the first kind.at n=10A330208
• Numbers with sum of digits equaling 17, divisible by 17, and containing the string "17".at n=15A346904