A323006 - OEIS

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A323006

Numbers k such that 363*2^k+1 is prime.

1, 2, 5, 16, 29, 61, 136, 145, 157, 178, 560, 581, 1001, 1234, 1325, 1370, 1405, 1541, 2761, 2984, 5441, 6386, 9769, 10756, 14144, 18385, 26233, 27496, 42422, 48865, 72473, 115372, 123262, 123836, 229264, 359725, 401653, 484076, 611998, 762961, 1319756 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,2`
	LINKS	`Robert Price, Table of n, a(n) for n = 1..43` `Ray Ballinger, Proth Search Page` `Ray Ballinger and Wilfrid Keller, List of primes k.2^n + 1 for 300 < k < 600` `Y. Gallot, Proth.exe: Windows Program for Finding Large Primes` `Wilfrid Keller, List of primes k.2^n - 1 for k < 300` `Eric Weisstein's World of Mathematics, Proth Prime` `Index entries for sequences of n such that k2^n-1 (or k2^n+1) is prime`
	MAPLE	`select(k->isprime(363*2^k+1), [$1..1000]); # Muniru A Asiru, Jan 02 2019`
	MATHEMATICA	`Select[Range[1000], PrimeQ[3632^# + 1] &] ( Robert Price, Jan 01 2019 *)`
	CROSSREFS	`Sequence in context: A137997 A213359 A328000 * A139022 A196025 A174988` `Adjacent sequences: A323003 A323004 A323005 * A323007 A323008 A323009`
	KEYWORD	`nonn,hard`
	AUTHOR	`Robert Price, Jan 01 2019`
	STATUS	`approved`

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Last modified April 23 12:15 EDT 2021. Contains 343204 sequences. (Running on oeis4.)