id:A114549 - OEIS Search Results

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Prime numbers p for which (sum of the digits of p) + (number of the digits of p) is a prime.

+0
1

2, 23, 29, 41, 47, 83, 89, 101, 103, 107, 109, 127, 149, 163, 167, 181, 211, 233, 239, 251, 257, 271, 277, 293, 307, 347, 349, 367, 383, 389, 419, 431, 433, 439, 457, 463, 479, 491, 503, 509, 521, 523, 541, 563, 569, 587, 613, 617, 619, 631, 653, 659, 673 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`89 is in the sequence because (1) it is a prime number, (2) the sum of the digits is 8+9=17, the number of digits is 2 and (3) 17+2=19, which is a prime number.`
	CROSSREFS	`Sequence in context: A041649 A141533 A045391 this_sequence A034843 A084373 A107148` `Adjacent sequences: A114546 A114547 A114548 this_sequence A114550 A114551 A114552`
	KEYWORD	`base,nonn`
	AUTHOR	`Luc Stevens (lms022(AT)yahoo.com), Apr 20 2006`

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Last modified November 18 20:14 EST 2008. Contains 147244 sequences.

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