id:A139067 - OEIS Search Results

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Primes whose decimal expansion consists of a string of 2's followed by a string of 3's.

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5

2, 3, 23, 223, 233, 2333, 23333, 2222333, 22222223, 223333333, 22222222223, 22222223333, 22222333333, 22223333333, 23333333333, 222223333333, 23333333333333333, 2222222222222233333, 2222222222333333333 (list; graph; listen)

	OFFSET	`1,1`
	CROSSREFS	`Cf. A020458, A141470, A141471, A141472.` `Adjacent sequences: A139064 A139065 A139066 this_sequence A139068 A139069 A139070` `Sequence in context: A041459 A126702 A020458 this_sequence A099656 A064888 A104458`
	KEYWORD	`nonn,base`
	AUTHOR	`Paul Curtz (bpcrtz(AT)free.fr), Jun 05 2008`
	EXTENSIONS	`Entry revised by Ray Chandler (rayjchandler(AT)sbcglobal.net) and njas, Aug 14 2008`

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Last modified October 11 13:47 EDT 2008. Contains 144830 sequences.

AT&T Labs Research