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

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A159352 Primes of the form "1 [0]_n 3" - with zeros between 1 and 3. 13
 13, 103, 100003, 1000003, 100000000003, 100000000000000003, 1000000000000000003, 1000000000000000000000000000000000000003, 100000000000000000000000000000000000000000000000000000003 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Dario Alejandro Alpern, Factorization using the Elliptic Curve Method Makoto Kamada, Prime numbers of the form 100...003. EXAMPLE 1000000000000000000000000000000000000003 is a prime with 38 zeros between 1 and 3. MAPLE select(isprime, [seq(10^k+3, k=1..998)]); # Robert Israel, Dec 28 2015 PROG (MAGMA) [p: n in [1..100] | IsPrime(p) where p is 10^n+3 ]; // Klaus Brockhaus, Apr 12 2009 CROSSREFS Cf. A159031. Cf. A049054 (numbers n such that 10^n + 3 is prime), A102006 (numbers n such that 10*10^n + 3 is prime), A011557 (powers of 10). Sequence in context: A100277 A087398 A080440 * A289859 A129762 A283121 Adjacent sequences:  A159349 A159350 A159351 * A159353 A159354 A159355 KEYWORD base,nonn AUTHOR Parthasarathy Nambi, Apr 11 2009 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.

Last modified January 28 22:35 EST 2020. Contains 331328 sequences. (Running on oeis4.)