A181321 Primes with digital sum 70.

189997999, 199799989, 199898899, 199997899, 199997989, 199998889, 268999999, 269998999, 278989999, 278999989, 279889999, 279988999, 287998999, 287999989, 288998989, 288999889, 288999979, 289699999, 289789999, 289889989

Offset: 1

Author

Zak Seidov, Jan 26 2011

Keywords

• nonn
• base

Comments

The sequence begins with 8438 9-digit numbers.

Then there are 739572 10-digit numbers.

All terms == 7 (mod 18).

Links

• T. D. Noe, Table of n, a(n) for n = 1..8438

Crossrefs

Cf. A073867, A111380, A181178, A181182.

Cf. similar sequences listed in A244918.

Programs

Magma

[p: p in PrimesUpTo(3*10^8) | &+Intseq(p) eq 70]; // Vincenzo Librandi, Jul 09 2014

Mathematica

Select[Prime[Range[3*10^8]], Total[IntegerDigits[#]]==70 &] (* Vincenzo Librandi, Jul 09 2014 *)

Python

# see code in A107579 which can be used to produce this sequence by giving the initial term p = 189997999 (or 8*10**7-1, for digit sum 70). - M. F. Hasler, Mar 16 2022