A069590 Smallest n-digit prime starting with a 2.
2, 23, 211, 2003, 20011, 200003, 2000003, 20000003, 200000033, 2000000011, 20000000089, 200000000041, 2000000000003, 20000000000021, 200000000000027, 2000000000000021, 20000000000000003, 200000000000000003, 2000000000000000057, 20000000000000000011
Offset: 1
Links
- Robert Israel, Table of n, a(n) for n = 1..996
Programs
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Maple
seq(nextprime(2*10^(n-1)-1), n=1..22);
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Mathematica
Join[{2}, NextPrime[2*10^Range[20]]] (* Paolo Xausa, Jun 22 2024 *)
Extensions
More terms from Sascha Kurz, Mar 28 2002
Simpler definition from Robert Israel, Jun 21 2024