A199124 Least prime having 1 more digit and higher sum of digits than the preceding term.

2, 13, 107, 1009, 10037, 100049, 1000099, 10000379, 100000399, 1000000787, 10000000799, 100000001989, 1000000001999, 10000000003999, 100000000006997, 1000000000017899, 10000000000018999, 100000000000038989, 1000000000000067999, 10000000000000079899, 100000000000000079999

Offset

1,1

Comments

For more terms use the formula a(n)=10^(n-1)+A199190(n) and the values listed in A199190.

Links

Table of n, a(n) for n=1..21.

Formula

A199124(n) = 10^(n-1)+A199190(n); see there for an estimate of growth.

Prog

(PARI) {print1(p=2); for(d=1, 20, o=A007953(p); p=10^d; until(A007953(p=nextprime(p+1))>o, ); print1(", "p))}

Crossrefs

Cf. A065122.

Sequence in context: A371586 A371574 A127746 * A069100 A031991 A371581

Adjacent sequences: A199121 A199122 A199123 * A199125 A199126 A199127

Keyword

nonn,base

Author

M. F. Hasler, Nov 03 2011

Status

approved