A060323 The first n digits of n! form a prime number.

43, 93, 808, 2057, 3247, 13557

Offset

1,1

Comments

The primality of a(4)! was established by Andrey V. Kulsha and Peter Liaskovsky (ALTAIR(AT)tut.by).

a(7) > 30000. [From Donovan Johnson, Mar 29 2010]

Links

Table of n, a(n) for n=1..6.

Crossrefs

Sequence in context: A306114 A044181 A044562 * A141958 A141990 A253952

Adjacent sequences: A060320 A060321 A060322 * A060324 A060325 A060326

Keyword

base,hard,nonn

Author

G. L. Honaker, Jr., Mar 29 2001

Extensions

a(5)-a(6) from Donovan Johnson, Mar 29 2010

Status

approved