id:A108250 - OEIS Search Results

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Primes p such that p + googol is prime.

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3469, 4447, 5641, 6637, 9013, 9631, 10903, 11173, 11839, 13831, 15139, 16183, 17581, 18793, 19819, 21523, 21673, 22027, 22189, 25759, 25771, 28123, 28933, 30517, 33931, 34843, 37171, 42187, 42337, 42901, 46279, 47353, 48823, 49123 (list; graph; listen)

	OFFSET	`1,1`
	FORMULA	`A googol = 10^100`
	PROGRAM	`(PARI) g(n) = forstep(x=1, n, 2, if(isprime(10^100+x)&isprime(x), print1(x", ")))`
	CROSSREFS	`Sequence in context: A125017 A031357 A144800 this_sequence A109484 A159215 A156773` `Adjacent sequences: A108247 A108248 A108249 this_sequence A108251 A108252 A108253`
	KEYWORD	`easy,nonn`
	AUTHOR	`Cino Hilliard (hillcino368(AT)gmail.com), Jun 17 2005`

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Last modified November 30 13:13 EST 2009. Contains 167758 sequences.

AT&T Labs Research