id:A086042 - OEIS Search Results

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Nontrivial numbers which are prime and yield another prime when their digits are sorted in ascending order.

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31, 71, 73, 97, 101, 103, 107, 109, 131, 173, 193, 197, 271, 293, 307, 311, 317, 373, 397, 419, 439, 491, 509, 547, 571, 593, 607, 617, 647, 659, 673, 701, 709, 719, 727, 733, 739, 743, 751, 757, 761, 809, 839, 907, 919, 937, 941, 947, 953, 971, 983, 991 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`Primes with digits already in ascending order (like 13 and 2357) are trivial cases and are therefore excluded.`
	EXAMPLE	`a(1)=31 because an ascending sort of 31's digits yields 13 which is also prime. a(53)=1009 because an ascending sort of 1009's digits yields 19 which is also prime.`
	CROSSREFS	`Cf. A086402, A086051.` `Sequence in context: A044514 A142110 A110831 this_sequence A086051 A109309 A127191` `Adjacent sequences: A086039 A086040 A086041 this_sequence A086043 A086044 A086045`
	KEYWORD	`base,nonn`
	AUTHOR	`Chuck Seggelin (barkeep(AT)plastereddragon.com), Jul 07 2003`

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Last modified December 10 00:48 EST 2009. Contains 170565 sequences.

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