A064295 Numbers k such that every (prime) factor of k!+1 is one more than a multiple of k.

1, 2, 3, 4, 5, 6, 7, 10, 11, 12, 25, 27, 28, 37, 41, 46, 73, 77, 116

Offset

1,2

Comments

a(20) >= 140. - Max Alekseyev, Feb 19 2024

Links

Table of n, a(n) for n=1..19.

H. Mishima, Factors of N!+1

Example

46 is in the list because 46!+1 = 47 * 268662306503771535067 * 435777793891607546778854755077304349 and all of those factors are = 1 mod 46.

Crossrefs

Complement of A064164, superset of A002981.

Sequence in context: A205666 A364869 A245809 * A001751 A191927 A116000

Adjacent sequences: A064292 A064293 A064294 * A064296 A064297 A064298

Keyword

nonn,more

Author

Don Reble, Sep 25 2001

Extensions

a(19) from Amiram Eldar, Oct 03 2019

Status

approved