id:A068801 - OEIS Search Results

Search: id:A068801

Displaying 1-1 of 1 results found.

page 1

Primes that can be formed by concatenating 2^a and 3^b.

+0
1

11, 13, 19, 23, 29, 41, 43, 83, 89, 127, 163, 181, 227, 281, 641, 643, 827, 881, 1283, 1289, 1627, 2243, 2729, 4243, 4729, 6427, 6481, 8243, 10243, 16561, 16729, 20483, 26561, 40961, 42187, 81929, 86561, 102481, 163841, 166561, 219683, 326561 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`8243 is a concatenation of 2^3 and 3^5. 10242187 is a term as a concatenation of 1024 (=2^10) and 2187(=3^7).`
	CROSSREFS	`Cf. A068712, A068714.` `Sequence in context: A101934 A164861 A040150 this_sequence A109650 A153421 A092402` `Adjacent sequences: A068798 A068799 A068800 this_sequence A068802 A068803 A068804`
	KEYWORD	`base,nonn`
	AUTHOR	`Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Mar 05 2002`
	EXTENSIONS	`Corrected and extended by Larry Reeves (larryr(AT)acm.org), Jun 25 2002`

page 1

Search completed in 0.002 seconds

Last modified November 27 14:34 EST 2009. Contains 167570 sequences.

AT&T Labs Research