A169984 Primes in carryless arithmetic mod 10 in which all digits except the rightmost are zero or five.

51, 52, 53, 54, 56, 57, 58, 59, 551, 553, 557, 559, 5051, 5053, 5057, 5059, 5501, 5503, 5507, 5509, 50051, 50053, 50057, 50059, 55001, 55003, 55007, 55009, 55551, 55553, 55557, 55559, 500501, 500503, 500507, 500509, 505001, 505003

Offset

1,1

Comments

These are called f-type primes.

Links

Table of n, a(n) for n=1..38.

Index entries for sequences related to carryless arithmetic

Crossrefs

A169887 = A163396 union A169984.

Sequence in context: A210086 A031959 A144162 * A042299 A321962 A060033

Adjacent sequences: A169981 A169982 A169983 * A169985 A169986 A169987

Keyword

nonn,base

Author

David Applegate, Marc LeBrun and N. J. A. Sloane, Aug 24 2010

Status

approved