id:A089971 - OEIS Search Results

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Decimal primes whose decimal representation in base 2 is also prime.

+0
2

11, 101, 10111, 101111, 1011001, 1100101, 10010101, 10011101, 10100011, 10101101, 10110011, 11000111, 11100101, 100111001, 101001011, 101101111, 101111011, 101111111, 110111011, 111001001, 1000001011, 1001001011 (list; graph; listen)

	OFFSET	`2,1`
	EXAMPLE	`3 is prime in decimal and 3 base 2 is 11 which is also prime in decimal.`
	CROSSREFS	`Sequence in context: A080439 A098153 A020449 this_sequence A082620 A156668 A103992` `Adjacent sequences: A089968 A089969 A089970 this_sequence A089972 A089973 A089974`
	KEYWORD	`base,nonn`
	AUTHOR	`Cino Hilliard (hillcino368(AT)gmail.com), Jan 18 2004`

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Last modified November 25 08:46 EST 2009. Contains 167481 sequences.

AT&T Labs Research