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A228507 Numbers n such that first n digits of A091723 (Decimal expansion of the root x of ExpIntegralEi[x]==0) gives a prime number. 0
1, 2, 145, 180, 691, 4123 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
a(7) > 10^4.
LINKS
Table of n, a(n) for n=1..6.
Eric Weisstein's World of Mathematics, Constant Primes
Eric Weisstein's World of Mathematics, Integer Sequence Primes
CROSSREFS
Cf. A091723.
Sequence in context: A074319 A188284 A306955 * A254499 A071064 A265442
Adjacent sequences: A228504 A228505 A228506 * A228508 A228509 A228510
KEYWORD
nonn,more,less,base
AUTHOR
Robert Price, Aug 23 2013
STATUS
approved

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Last modified May 27 23:57 EDT 2024. Contains 372900 sequences. (Running on oeis4.)