A391941 The smaller prime factor of RSA numbers.

37975227936943673922808872755445627854565536638199, 5846418214406154678836553182979162384198610505601062333, 327414555693498015751146303749141488063642403240171463406883, 3490529510847650949147849619903898133417764638493387843990820577, 39685999459597454290161126162883786067576449112810064832555157243

Offset

1,1

Comments

Please see comments and references in A391940.

Links

Antti Karttunen, Table of n, a(n) for n = 1..23

Formula

a(n) = A020639(A391940(n)) = A391940(n) / A391942(n).

Crossrefs

Cf. A020639, A391940, A391942.

Sequence in context: A280419 A292993 A095492 * A391942 A095494 A246290

Adjacent sequences: A391938 A391939 A391940 * A391942 A391943 A391944

Keyword

nonn,fini,hard,more

Author

Antti Karttunen, Dec 28 2025

Status

approved