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A062852 Largest n-digit strong pseudoprimes (in base 2). 5
8321, 90751, 983401, 9995671, 99789673, 999828727, 9998721001, 99973476433, 999855751441, 9998974546471, 99999760517281, 999985147456681, 9999952887414577, 99999984319096601, 999999916795882627, 9999999995077192591 (list; graph; refs; listen; history; text; internal format)
OFFSET

4,1

LINKS

Table of n, a(n) for n=4..19.

Patrick De Geest, Smallest n-digit pseudoprimes(base 2)

Index entries for sequences related to pseudoprimes

EXAMPLE

a(1)=8321 since 8321 is the largest 4-digit strong pseudoprime to base 2.

CROSSREFS

Cf. A001567, A068216, A067845, A001262, A062568.

Sequence in context: A252155 A258676 A170778 * A124414 A124415 A233954

Adjacent sequences:  A062849 A062850 A062851 * A062853 A062854 A062855

KEYWORD

hard,nonn,base

AUTHOR

Shyam Sunder Gupta, Feb 13 2002

EXTENSIONS

Edited by Charles R Greathouse IV, Nov 01 2009

a(16)-a(19) from Charles R Greathouse IV, Mar 14, 2011

STATUS

approved

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Last modified September 26 05:09 EDT 2017. Contains 292502 sequences.