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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 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Primes in A063114.

LINKS

K. D. Bajpai, Table of n, a(n) for n = 1..13250

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

Cf. A000040, A063114, A063543.

Sequence in context: A084354 A066725 A087340 * A237813 A106927 A158189

Adjacent sequences:  A246619 A246620 A246621 * A246623 A246624 A246625

KEYWORD

nonn,base

AUTHOR

K. D. Bajpai, Aug 31 2014

STATUS

approved

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Last modified April 19 10:33 EDT 2019. Contains 322252 sequences. (Running on oeis4.)