A089766 Smallest prime obtained as k*n! concatenated with a 1 for some k.

11, 11, 41, 61, 241, 1201, 14401, 100801, 5241601, 10886401, 72576001, 2395008001, 14370048001, 124540416001, 9589612032001, 143844180480001, 2719962685440001, 53353114214400001, 832308581744640001

Offset

0,1

Links

Table of n, a(n) for n=0..18.

Example

a(7) = 100801 is a prime obtained as 2*7! = 2*5040 = 10080 followed by a 1.

Maple

for n from 0 to 20 do for k from 1 do m:=10*k*n!+1 : if isprime(m) then printf("%d, ", m): break fi od od: # C. Ronaldo

Crossrefs

Sequence in context: A070849 A124297 A172507 * A077699 A266705 A228768

Adjacent sequences: A089763 A089764 A089765 * A089767 A089768 A089769

Keyword

base,nonn

Author

Amarnath Murthy, Nov 23 2003

Extensions

More terms from C. Ronaldo (aga_new_ac(AT)hotmail.com), Dec 26 2004

Status

approved