A069594 Smallest prime in which the n-th significant digit is a 4.

41, 401, 4001, 40009, 400009, 4000037, 40000003, 400000009, 4000000007, 40000000003, 400000000019, 4000000000039, 40000000000001, 400000000000063, 4000000000000021, 40000000000000063, 400000000000000013

Offset: 2

Author

Amarnath Murthy, Mar 25 2002

Keywords

• base
• nonn

Crossrefs

Cf. A069588, A069589, A069590, A069591, A069592, A069593.

Programs

Maple

seq(nextprime(4*10^j),j=1..32);

Mathematica

NextPrime[4*10^Range[20]] (* Harvey P. Dale, Apr 11 2013 *)

Extensions

More terms from Sascha Kurz, Mar 28 2002