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A062617
Numbers k such that 51^k - 50^k is prime.
0
2, 7, 139, 383, 1187, 5857, 41281
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OFFSET
1,1
COMMENTS
Terms greater than 1000 are often only strong pseudoprimes.
a(8) > 10^5. -
Robert Price
, Feb 28 2013
LINKS
Table of n, a(n) for n=1..7.
PROG
(PARI) is(n)=ispseudoprime(51^n-50^n) \\
Charles R Greathouse IV
, Jun 13 2017
CROSSREFS
Cf.
A000043
,
A057468
,
A059801
,
A059802
,
A062572
-
A062666
.
Sequence in context:
A120379
A101799
A201172
*
A207139
A064607
A182974
Adjacent sequences:
A062614
A062615
A062616
*
A062618
A062619
A062620
KEYWORD
nonn
,
hard
AUTHOR
Mike Oakes
, May 18 2001, May 19 2001
EXTENSIONS
a(7) from
Robert Price
, Feb 28 2013
STATUS
approved
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Last modified May 8 14:31 EDT 2024. Contains 372334 sequences. (Running on oeis4.)