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

16, 36, 74, 80, 81, 86, 115, 119, 121, 123, 141, 215, 266, 276, 360, 451, 465, 572, 779, 868, 1548, 1624, 1674, 1763, 1917, 1925, 2196, 2331, 2368, 2730, 3108, 3306, 3430, 3816, 4452, 4575, 5110, 5312, 5412, 6273, 6324, 6820, 7632, 8772, 9027, 9204, 9435

Offset: 1

Author

Patrick De Geest, Sep 15 1999

Keywords

• nonn

Examples

			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.
		

Crossrefs

Cf. A050703, A050710.

Extensions

Offset corrected by Sean A. Irvine, Aug 18 2021