42423

Appears in sequences

• Numbers k such that sigma(k) = sigma(k+4).at n=32A015863
• Absolute discriminants of complex quadratic fields with 3-class group of type (3,3) and Hilbert 3-class field tower of exact length 2.at n=27A242864
• Absolute discriminants of complex quadratic fields with 3-class group of type (3,3) and 3-principalization type (2241).at n=14A247689
• Absolute discriminants of complex quadratic fields with 3-class group of type (3,3) whose second 3-class group is located on the sporadic part of the coclass graph G(3,2) outside of coclass trees.at n=39A247691
• Indices of the start of 10 successive distinct digits in the decimal expansion of e (2.718281828...).at n=24A258166
• Numbers k such that 4*10^k + 93 is prime.at n=24A281829