A070248 - OEIS

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A070248

Palindromic primes with digit sum 7.

7, 151, 313, 10501, 11311, 30103, 1201021, 3001003, 100050001, 100131001, 101030101, 110111011, 111010111, 10000500001, 1100011100011, 1100101010011, 100020010020001 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,1`
	LINKS	`Chai Wah Wu, Table of n, a(n) for n = 1..1111`
	MATHEMATICA	`Do[p = Join[ IntegerDigits[n], Reverse[ Drop[ IntegerDigits[n], -1]]]; q = Plus @@ p; If[ PrimeQ[ FromDigits[p]] && q == 7, Print[ FromDigits[p]]], {n, 1, 10^7}]`
	CROSSREFS	`Cf. A002385, A070247 & A070249.` `Sequence in context: A305467 A229806 A229880 * A329010 A309855 A364845` `Adjacent sequences: A070245 A070246 A070247 * A070249 A070250 A070251`
	KEYWORD	`base,nonn`
	AUTHOR	`Amarnath Murthy, May 05 2002`
	EXTENSIONS	`Edited by Robert G. Wilson v, May 15 2002`
	STATUS	`approved`

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Last modified December 6 03:07 EST 2023. Contains 367594 sequences. (Running on oeis4.)