A391944 Number of decimal digits of RSA numbers.

100, 110, 120, 129, 130, 140, 150, 155, 160, 170, 174, 180, 190, 193, 200, 210, 212, 220, 230, 232, 232, 240, 250, 260, 270, 270, 280, 290, 300, 309, 309, 310, 320, 330, 340, 350, 360, 370, 380, 390, 400, 410, 420, 430, 440, 450, 460, 463, 470, 480, 490, 500, 617, 617

Offset

1,1

Links

Table of n, a(n) for n=1..54.

Formula

a(n) = A055642(A391940(n)).

Crossrefs

Cf. A055642, A391940.

Cf. also A391943, A391945.

Sequence in context: A290948 A033828 A348139 * A162530 A204590 A115454

Adjacent sequences: A391941 A391942 A391943 * A391945 A391946 A391947

Keyword

nonn,base,fini,full

Author

Antti Karttunen, Dec 28 2025

Status

approved