id:A054723 - OEIS Search Results

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Prime exponents of nonprime Mersenne numbers.

+0
10

11, 23, 29, 37, 41, 43, 47, 53, 59, 67, 71, 73, 79, 83, 97, 101, 103, 109, 113, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197, 199, 211, 223, 227, 229, 233, 239, 241, 251, 257, 263, 269, 271, 277, 281, 283, 293, 307, 311, 313, 317, 331 (list; graph; listen)

	OFFSET	`0,1`
	EXAMPLE	`p=29 is included because 29 is prime, but 2^29-1 is not prime.`
	CROSSREFS	`Complement of A000043 inside A000040. No proof is known that this sequence is infinite!` `A000043, A016027.` `Sequence in context: A058340 A138537 A136000 this_sequence A109981 A091367 A088136` `Adjacent sequences: A054720 A054721 A054722 this_sequence A054724 A054725 A054726`
	KEYWORD	`easy,nonn`
	AUTHOR	`Jeppe Stig Nielsen (sequence(AT)jeppesn.dk), Apr 20 2000`

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Last modified September 6 16:04 EDT 2008. Contains 143483 sequences.

AT&T Labs Research