id:A135930 - OEIS Search Results

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Primes whose integer square root is also prime.

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5, 7, 11, 13, 29, 31, 53, 59, 61, 127, 131, 137, 139, 173, 179, 181, 191, 193, 293, 307, 311, 313, 317, 367, 373, 379, 383, 389, 397, 541, 547, 557, 563, 569, 571, 853, 857, 859, 863, 877, 881, 883, 887, 967, 971, 977, 983, 991, 997, 1009, 1013, 1019, 1021 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`The integer square root of an integer x >= 0 can be defined as floor(sqrt(x)) and the remainder of this as x - (floor(sqrt(x)))^2.`
	LINKS	`Wikipedia, Integer square root`
	PROGRAM	`(PARI) { forprime(p=2, 2000, isr = sqrtint(p); if (isprime(isr), print1(p, ", ") ) ) }`
	CROSSREFS	`Sequence in context: A022885 A135774 A155053 this_sequence A163429 A136055 A073340` `Adjacent sequences: A135927 A135928 A135929 this_sequence A135931 A135932 A135933`
	KEYWORD	`nonn`
	AUTHOR	`Harry J. Smith (hjsmithh(AT)sbcglobal.net), Dec 07 2007`

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.

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