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A087022
Total number of prime factors of n-th cyclic number.
6
6, 9, 12, 10, 11, 9, 11, 23, 25, 25, 22, 18, 19, 15, 14, 38, 35, 24, 28, 25, 27, 21, 17, 38, 44, 27, 43, 16, 16, 23, 42, 35, 37, 30, 29, 14, 23, 62, 41, 51, 28, 26, 24, 19, 50, 29, 39, 25, 62, 36, 29
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) = A001222(A004042(n+1)).
EXAMPLE
A004042(2) = 142857 = 37*13*11*3^3, therefore a(1) = A087021(1)+2 = 6.
CROSSREFS
KEYWORD
nonn,more,hard
AUTHOR
Reinhard Zumkeller, Jul 30 2003
EXTENSIONS
a(3) corrected, a(12)-a(42) added by Ray Chandler, Nov 16 2011
a(43)-a(51) from Max Alekseyev, May 13 2022
STATUS
approved