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A246622
Primes of the form n + product of nonzero digits of n, in order of their occurrence.
1
2, 11, 23, 29, 41, 47, 67, 109, 89, 107, 101, 167, 181, 223, 199, 227, 251, 293, 283, 349, 331, 433, 347, 461, 313, 383, 353, 379, 431, 457, 379, 443, 521, 547, 457, 491, 593, 499, 557, 673, 601, 823, 619, 653, 839, 607, 617, 631, 659, 673, 659, 743, 929, 919
OFFSET
1,1
COMMENTS
Primes in A063114.
LINKS
EXAMPLE
a(2) = 11 which is prime. Also, 11 = 10 + 1, which is n + product of nonzero digit of n.
a(9) = 89 which is prime. Also, 89 = 81 + (8*1), which is n + product of nonzero digits of n.
a(10) = 107 which is prime. Also, 107 = 83 + (8*3), which is n + product of nonzero digits of n.
MATHEMATICA
Select[Table[n + Times @@ DeleteCases[IntegerDigits[n], 0], {n, 1000}], PrimeQ]
CROSSREFS
KEYWORD
nonn,base
AUTHOR
K. D. Bajpai, Aug 31 2014
STATUS
approved