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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
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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 September 18 15:02 EDT 2024. Contains 376000 sequences. (Running on oeis4.)