A109184 Palindromic primes with digit sum 20.

929, 16661, 17471, 36263, 70607, 72227, 73037, 91019, 1074701, 1082801, 1180811, 1262621, 1328231, 1360631, 1508051, 1532351, 1630361, 1712171, 1802081, 3160613, 3218123, 7014107, 7300037, 9002009, 102383201, 102707201, 103282301

Offset: 1

Author

Zak Seidov, Jun 22 2005

Keywords

• base
• nonn

Comments

Cf. A070250 Palindromic primes with digit sum 10, A107579 Primes with digit sum = 10, A106760 Primes with digit sum = 20, A109185 Palindromic primes with digit sum 40.

Links

• Chai Wah Wu, Table of n, a(n) for n = 1..4732

Crossrefs

Cf. A070250, A106760, A107579, A109185.

Programs

Mathematica

Select[Prime[Range[5940000]],PalindromeQ[#]&&Total[IntegerDigits[#]]==20&] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, Jun 19 2021 *)