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 A050775 Iterated procedure 'composite k added to sum of its prime factors reaches a prime' yields 8 skipped primes. 0

%I #9 Aug 18 2021 23:46:12

%S 16,36,74,80,81,86,115,119,121,123,141,215,266,276,360,451,465,572,

%T 779,868,1548,1624,1674,1763,1917,1925,2196,2331,2368,2730,3108,3306,

%U 3430,3816,4452,4575,5110,5312,5412,6273,6324,6820,7632,8772,9027,9204,9435

%N Iterated procedure 'composite k added to sum of its prime factors reaches a prime' yields 8 skipped primes.

%e a(6)=86 + (2+43) = ending prime 131. Between 86 and 131 one finds 8 primes 89, 97, 101, 103, 107, 109, 113 and 127.

%Y Cf. A050703, A050710.

%K nonn

%O 1,1

%A _Patrick De Geest_, Sep 15 1999

%E Offset corrected by _Sean A. Irvine_, Aug 18 2021

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Last modified August 10 21:39 EDT 2024. Contains 375058 sequences. (Running on oeis4.)