login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo

Please make a donation to keep the OEIS running. We are now in our 56th year. In the past year we added 10000 new sequences and reached almost 9000 citations (which often say "discovered thanks to the OEIS").
Other ways to donate

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A105680 Numbers k such that 1009*k + 9973 is prime. 4
0, 4, 10, 34, 40, 70, 106, 124, 136, 144, 150, 162, 166, 174, 186, 190, 202, 244, 280, 300, 312, 360, 370, 372, 376, 384, 390, 412, 454, 456, 466, 472, 474, 504, 522, 540, 544, 546, 550, 574, 586, 592, 606, 612, 624, 636, 654, 670, 682, 684, 690, 694, 696 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

1009 and 9973 are the smallest and largest four-digit primes, respectively.

LINKS

Daniel Starodubtsev, Table of n, a(n) for n = 1..10000

EXAMPLE

If k=0, then 1009*k + 9973 = 9973 (prime).

If k=144, then 1009*k + 9973 = 155269 (prime).

PROG

(MAGMA) [n: n in [0..700] | IsPrime(1009*n+9973)]; // Vincenzo Librandi, Nov 13 2010

(PARI) is(n)=isprime(1009*n+9973) \\ Charles R Greathouse IV, Jun 06 2017

CROSSREFS

Cf. A105679.

Sequence in context: A317800 A149171 A149172 * A261577 A224217 A066454

Adjacent sequences:  A105677 A105678 A105679 * A105681 A105682 A105683

KEYWORD

nonn,easy

AUTHOR

Parthasarathy Nambi, May 06 2005

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified November 30 06:11 EST 2020. Contains 338781 sequences. (Running on oeis4.)