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A050776 Iterated procedure 'composite k added to sum of its prime factors reaches a prime' yields 9 skipped primes. 1
30, 42, 99, 174, 188, 212, 216, 295, 329, 348, 371, 620, 627, 629, 649, 851, 901, 925, 957, 1081, 1189, 1248, 1353, 1363, 1696, 1830, 1880, 2133, 2173, 2491, 2664, 3660, 3843, 4020, 4420, 5056, 5688, 6327, 6700, 7540, 7626, 7808, 7888, 7900, 8295, 8778 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
EXAMPLE
a(3)=99 + (3+3+11) = 116 + (2+2+29) = ending prime 149. Between 99 and 149 one finds 9 primes 101, 103, 107, 109, 113, 127, 131, 137 and 139.
CROSSREFS
Sequence in context: A219742 A348557 A257832 * A268697 A258358 A090692
KEYWORD
nonn
AUTHOR
Patrick De Geest, Sep 15 1999
EXTENSIONS
Offset corrected by Sean A. Irvine, Aug 18 2021
STATUS
approved

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Last modified July 18 21:02 EDT 2024. Contains 374388 sequences. (Running on oeis4.)