Palindromes in the decimal expansion of .
The string 944449 was 'first' found at position 75557 in the decimal expansion of
from the first digit after the decimal point. The 3. is not counted. [Patrick De Geest]
PS Note that 75557 is a palprime !
Both palindromes are of the 'depression' form (ref. H. Heinz).
My previous record palindrome found at a dito position is
8257528 at position 5479745 [Patrick De Geest - October 24, 1999]
My record palindromic prime found at a dito position is
9136319 at position 9128219 [PDG - December 8, 2002]
Note that 9128219 and 9136319 are two consecutive palprimes !
|Did You Know !|
The string 9136319 was found at position 9128219 counting from
the first digit after the decimal point of . The 3. is not counted.
Moreover both numbers are two consecutive palprimes !
Dropping the left 91 from the two numbers reveals two other primes
28219 and 36319, as well as the combination 91_363_282_19 !
See also Sloane's OEIS A038101.
The smallest palindrome that I didn't find in the first 100 million digits of Pi is
4620264 at position ?
The largest palindrome that I discovered present in the first 100 million digits of Pi is
palindromic triangular nr 31 or 30416261403 at position 36111197
Donald S. McDonald noted a 13 odd-digit palindromic number fragment
after the 1722773th decimal place of number pi or
7139999999317 at position 1722773
The portion also contains a run of 14 consecutive odd digits
followed immediately by 11 even digits... perhaps very rare !
A neat fact published in newsgroup rec.puzzles dd. May 15 2000.