A062852 Largest n-digit strong pseudoprimes (in base 2).

8321, 90751, 983401, 9995671, 99789673, 999828727, 9998721001, 99973476433, 999855751441, 9998974546471, 99999760517281, 999985147456681, 9999952887414577, 99999984319096601, 999999916795882627, 9999999995077192591

Offset: 4

Author

Shyam Sunder Gupta, Feb 13 2002

Keywords

• hard
• nonn
• base

Examples

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

Links

• Patrick De Geest, Smallest n-digit pseudoprimes(base 2)
• Index entries for sequences related to pseudoprimes

Crossrefs

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

Extensions

Edited by Charles R Greathouse IV, Nov 01 2009

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