A353409 Smallest overpseudoprime to base 2 (A141232) with n distinct prime factors.

2047, 13421773, 14073748835533

Offset

2,1

Comments

a(5) > 2^64.

a(5) <= 1376414970248942474729,

a(6) <= 48663264978548104646392577273,

a(7) <= 294413417279041274238472403168164964689,

a(8) <= 98117433931341406381352476618801951316878459720486433149,

a(9) <= 1252977736815195675988249271013258909221812482895905512953752551821.

Links

Table of n, a(n) for n=2..4.

Crossrefs

Cf. A001567, A007011, A141232, A180065, A328665.

Sequence in context: A135976 A236373 A289476 * A222526 A035892 A069272

Adjacent sequences: A353406 A353407 A353408 * A353410 A353411 A353412

Keyword

nonn,bref,more

Author

Daniel Suteu, May 07 2022

Status

approved