id:A064507 - OEIS Search Results

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Numbers that yield primes when cast in their own base.

+0
2

21, 27, 29, 61, 67, 111, 151, 191, 201, 203, 223, 241, 313, 319, 331, 351, 373, 397, 403, 409, 461, 463, 481, 553, 559, 571, 667, 711, 791, 807, 841, 869, 889, 931, 979, 1071, 1079, 1107, 1129, 1189, 1257, 1273, 1277, 1297, 1431, 1437, 1583, 1611, 1639 (list; graph; listen)

	OFFSET	`0,1`
	EXAMPLE	`E.g. 21 in base 21 is 221+1=43, 111 is 1111111+1111+1=12433, etc.`
	CROSSREFS	`Cf. A064508.` `Sequence in context: A020269 A035700 A134935 this_sequence A103246 A072392 A098898` `Adjacent sequences: A064504 A064505 A064506 this_sequence A064508 A064509 A064510`
	KEYWORD	`nonn`
	AUTHOR	`Jon Perry (perry(AT)globalnet.co.uk), Oct 06 2001`

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Last modified September 7 14:45 EDT 2008. Contains 143483 sequences.

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