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A262284 Primes whose binary expansion begins 101. 8
5, 11, 23, 41, 43, 47, 83, 89, 163, 167, 173, 179, 181, 191, 331, 337, 347, 349, 353, 359, 367, 373, 379, 383, 641, 643, 647, 653, 659, 661, 673, 677, 683, 691, 701, 709, 719, 727, 733, 739, 743, 751, 757, 761, 1283, 1289, 1291, 1297, 1301, 1303, 1307, 1319, 1321, 1327, 1361, 1367, 1373, 1381, 1399 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Alois P. Heinz, Table of n, a(n) for n = 1..20000

MAPLE

lis:=[]; q:=5;

for i from 1 to 10 do for j from 1 to 2^i-1 do

if isprime(q*2^i+j) then lis:=[op(lis), q*2^i+j]; fi; od: od:

lis;

CROSSREFS

Primes whose binary expansion begins with binary expansion of 1, 2, 3, 4, 5, 6, 7: A000040, A080165, A080166, A262286, A262284, A262287, A262285.

Suggested by A262350.

Column k=5 of A262365.

Sequence in context: A143125 A147081 A046628 * A118439 A323042 A210731

Adjacent sequences:  A262281 A262282 A262283 * A262285 A262286 A262287

KEYWORD

nonn,base

AUTHOR

N. J. A. Sloane, Sep 19 2015

STATUS

approved

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Last modified August 20 03:48 EDT 2019. Contains 326139 sequences. (Running on oeis4.)