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Palindromic Polygonal Sporadic Number Record Table

General formula for n-gonal is x/2[(n–2)x–(n–4)]

Feng Yuan
January 6, 2008
TRIANGLE3-gonalbase = 12818415289796366986155224
palindrome821558852708426395118044081159362480725885512847
Feng Yuan
January 31, 2008
SQUARE4-gonalbase = 137351253064925863529247760928
palindrome1886536671850530641991373196913731991460350581766356881 55
Feng Yuan
January 6, 2008
PENTA5-gonalbase = 12848111191876174826390824
palindrome2476109417982207324993232399423702289714901674247
Feng Yuan
January 5, 2008
HEXA6-gonalbase = 1326959137438716673274923
palindrome35216411048642059310103010139502468401146125345
Feng Yuan
January 6, 2008
HEPTA7-gonalbase = 11509537560444623434599324
palindrome3311736371382139346033767330643931283173637113347
Feng Yuan
January 3, 2008
OCTA8-gonalbase = 79035091439605146377121
palindrome187396370366002400676367600420066307369378143
Feng Yuan
January 6, 2008
NONA9-gonalbase = 11525423053487170954107224
palindrome4649238179664874022488616884220478466971832946447


Various Palindromic Sporadic Numbers Record Table


W. Roonguthai
August 31, 1997
PRONICn(n+1)base = 25545544554455445544554455455230
palindrome6525748465836682678168806984666489608861876286638564847525659
P. De Geest
May 6, 2000
Q-PRONICn(n+2)base = 603520008890713
palindrome3642364011315513110463246326
P. De Geest
-- -- --
TETRA(n)(n+1)(n+2)/6base = 3363
palindrome63787367
---
-- -- --
CUBEn^3base = 22014
palindrome1066252660111
P. De Geest
April 3, 2005
QU-SQRn+(n+1)^2base = 3921331828154504717
palindrome153768433064975511557946033486735134
P. De Geest
October 25, 1997
QO-SQRn^2+(n+1)base = 26545544554455445544543724
palindrome7046659356925791589054212450985197529653956640747
Feng Yuan
April 4, 2002
SQUADD1n^2+1base = 2370235608734464217
palindrome56180168409128360638219048610816533












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