id:A089981 - OEIS Search Results

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Decimal primes whose decimal representation in base 3 is also prime.

+0
2

2, 2111, 2221, 10211, 12011, 12211, 20201, 21011, 21101, 21211, 22111, 101021, 101111, 102101, 102121, 110221, 111121, 111211, 120011, 120121, 121001, 121021, 122011, 201101, 202001, 202021, 210011, 210101, 1000211, 1010201, 1012201 (list; graph; listen)

	OFFSET	`2,1`
	EXAMPLE	`67 is prime in decimal and 67 base 3 is 2111 which is also prime in decimal.`
	CROSSREFS	`Sequence in context: A101722 A004908 A004813 this_sequence A028487 A073476 A051103` `Adjacent sequences: A089978 A089979 A089980 this_sequence A089982 A089983 A089984`
	KEYWORD	`base,nonn`
	AUTHOR	`Cino Hilliard (hillcino368(AT)gmail.com), Jan 18 2004`

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Last modified December 15 00:47 EST 2009. Contains 170825 sequences.

AT&T Labs Research