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A204578 Primes of the form 5^k-2. 1
3, 23, 6103515623, 1490116119384765623, 88817841970012523233890533447265623, 11754943508222875079687365372222456778186655567720875215087517062784172594547271728515623, 44841550858394146269559346665277316200968382140048504696226185084473314645947539247572422027587890623 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
See the sequence A109080 for the corresponding exponents k.
The number a(3) = 6103515623 is also in A095304, A104090 and A128472.
LINKS
FORMULA
a(n) = 5^A109080(n)-2.
PROG
(PARI) for(i=0, 999, ispseudoprime(t=5^i-2) & print1(t", "))
CROSSREFS
Cf. A109080.
Sequence in context: A352333 A355960 A264929 * A120085 A062834 A047980
KEYWORD
nonn,less
AUTHOR
M. F. Hasler, Jan 30 2012
STATUS
approved

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Last modified May 23 08:52 EDT 2024. Contains 372760 sequences. (Running on oeis4.)