login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A098918 Product of first n Mersenne primes = Product_{k=1..n} A000668(k). 3
3, 21, 651, 82677, 677207307, 88762238935797, 46536887964932201739, 99937205886963012698207462133, 230439507554803283449625488965353401397883657483, 142635146517648430682283003170196535604142636808535322508273273161458426613 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
EXAMPLE
a(4) = 82677 because the first 4 Mersenne primes are 2^2-1=3, 2^3-1=7, 2^5-1=31, 2^7-1=127; 3*7*31*127 = 82677.
MATHEMATICA
FoldList[Times, 1, Select[Table[2^n-1, {n, Prime[Range[50]]}], PrimeQ]] (* Harvey P. Dale, Jul 10 2013 *)
CROSSREFS
Sequence in context: A093549 A012044 A350513 * A001699 A291967 A171104
KEYWORD
nonn
AUTHOR
Pierre CAMI, Oct 17 2004
EXTENSIONS
More terms from Harvey P. Dale, Jul 10 2013
STATUS
approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified March 29 02:16 EDT 2024. Contains 371264 sequences. (Running on oeis4.)