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A103111 Smallest natural number m such that n^n^n + m is prime. 1
1, 1, 16, 75, 2994, 96545 (list; graph; refs; listen; history; internal format)
OFFSET

1,3

EXAMPLE

a(5)=2994 because 5^5^5 + 2994 is prime and 5^5^5 + k is composite for 0<k<2994.

CROSSREFS

Cf. A103112, A074966, A074967.

Sequence in context: A197873 A200786 A189949 * A118862 A118532 A007834

Adjacent sequences:  A103108 A103109 A103110 * A103112 A103113 A103114

KEYWORD

hard,more,nonn

AUTHOR

Farideh Firoozbakht (mymontain(AT)yahoo.com), Mar 04 2005

EXTENSIONS

a(6) from Donovan Johnson (donovan.johnson(AT)yahoo.com), Mar 06 2008

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Last modified February 17 04:33 EST 2012. Contains 205978 sequences.