A199819 - OEIS

A199819

Primes of the form 10^n-9^n

19, 271, 5217031, 68618940391, 8649148282327007911, 95289871302753755165078396311 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,1`
	LINKS	`Vincenzo Librandi, Table of n, a(n) for n = 1..9`
	MATHEMATICA	`Select[10^Range[3000]-9^Range[3000], PrimeQ]`
	PROG	`(Magma) [ a: n in [0..400] \| IsPrime(a) where a is 10^n-9^n ]`
	CROSSREFS	`Cf. A016189, A062576` `Sequence in context: A125476 A016248 A322539 * A016187 A016184 A197742` `Adjacent sequences: A199816 A199817 A199818 * A199820 A199821 A199822`
	KEYWORD	`nonn`
	AUTHOR	`Vincenzo Librandi, Nov 21 2011`
	STATUS	`approved`

Last modified March 20 14:25 EDT 2023. Contains 361384 sequences. (Running on oeis4.)