login
A087023
Maximal exponent in prime factorization of n-th cyclic number.
4
3, 2, 4, 2, 2, 2, 2, 3, 3, 5, 2, 2, 2, 2, 2, 4, 3, 3, 3, 2, 2, 2, 2, 3, 3, 3, 5, 2, 2, 2, 5, 2, 7, 2, 3, 2, 2, 5, 3, 4, 2, 3, 2, 2, 2, 3, 3, 2, 6, 2, 3
OFFSET
1,1
COMMENTS
A004042(n) factorized with Dario Alpern's ECM.
Extended using factors of 10^(A001913(n)-1)-1, see Kamada link.
LINKS
FORMULA
a(n) = A051903(A004042(n+1)).
EXAMPLE
A004042(2) = 142857 = 37*13*11*3^3, therefore a(1) = 3.
KEYWORD
nonn,more,hard
AUTHOR
Reinhard Zumkeller, Jul 30 2003
EXTENSIONS
a(12)-a(42) from Ray Chandler, Nov 16 2011
a(43)-a(51) from Max Alekseyev, May 14 2022
STATUS
approved