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A173418
Primes formed by the initial digits of the decimal expansion of 1/(Golden Ratio).
0
61, 61803398874989
OFFSET
1,1
COMMENTS
The next term consists of the first 887 digits of 1/(Golden Ratio) and is too large to show here.
LINKS
Eric Weisstein's World of Mathematics, Phi-Prime
MAPLE
Digits := 1000: n0 := evalf((sqrt(5)-1)/2): for i from 1 to 10000 do t1 := trunc(10^i*n0): if isprime(t1) then print(t1): fi: od:
MATHEMATICA
With[{gr=RealDigits[1/GoldenRatio, 10, 1000][[1]]}, Select[Table[ FromDigits[ Take[ gr, n]], {n, 1000}], PrimeQ]] (* Harvey P. Dale, Oct 17 2012 *)
CROSSREFS
Sequence in context: A093631 A087513 A176272 * A147667 A022084 A362452
KEYWORD
nonn,base,bref
AUTHOR
Michel Lagneau, Feb 17 2010
STATUS
approved