id:A069791 - OEIS Search Results

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Primes which yield primes each time the process of removing two outermost digits is carried out until finally a two digit prime (possibly with a leading 0) is obtained.

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1021, 1031, 1033, 1039, 1051, 1117, 1171, 1193, 1231, 1237, 1291, 1297, 1319, 1373, 1433, 1439, 1471, 1531, 1597, 1613, 1619, 1733, 1831, 1973, 1979, 2039, 2053, 2111, 2113, 2131, 2137, 2179, 2237, 2239, 2293, 2297, 2311 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`101737 is a member as the number obtained by removing the first and the last digit 0173 is a prime and further removing the first and the last digit gives another prime 17.`
	CROSSREFS	`Cf. A069686.` `Sequence in context: A015160 A102925 A024020 this_sequence A088290 A082059 A081633` `Adjacent sequences: A069788 A069789 A069790 this_sequence A069792 A069793 A069794`
	KEYWORD	`base,nonn`
	AUTHOR	`Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Apr 09 2002`
	EXTENSIONS	`Corrected by T. D. Noe (noe(AT)sspectra.com), Nov 01 2006`

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Last modified November 25 08:46 EST 2009. Contains 167481 sequences.

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