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A353409 Smallest overpseudoprime to base 2 (A141232) with n distinct prime factors. 0
2047, 13421773, 14073748835533 (list; graph; refs; listen; history; text; internal format)
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

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Last modified June 26 00:12 EDT 2022. Contains 354870 sequences. (Running on oeis4.)