A098918 Product of first n Mersenne primes = Product_{k=1..n} A000668(k).

3, 21, 651, 82677, 677207307, 88762238935797, 46536887964932201739, 99937205886963012698207462133, 230439507554803283449625488965353401397883657483, 142635146517648430682283003170196535604142636808535322508273273161458426613

Offset: 1

Author

Pierre CAMI, Oct 17 2004

Keywords

• nonn

Examples

			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.
		

Links

• Harvey P. Dale, Table of n, a(n) for n = 1..15

Crossrefs

Cf. A000043, A000668.

Programs

Mathematica

FoldList[Times,1,Select[Table[2^n-1,{n,Prime[Range[50]]}],PrimeQ]] (* Harvey P. Dale, Jul 10 2013 *)

Extensions

More terms from Harvey P. Dale, Jul 10 2013