A255441 Carmichael numbers of the form (60k+41)*(90k+61)*(150k+101), where 60k+41, 90k+61 and 150k+101 are all primes.

252601, 3828001, 82929001, 366652201, 8251854001, 12173703001, 25749237001, 67495942201, 82380774001, 285983187601, 802204143001, 1039708768201, 1068674250001, 1158788350201, 2997587784001, 3236207713201, 4467180843001, 7902515425201, 8470346587201

Offset

1,1

Links

Amiram Eldar, Table of n, a(n) for n = 1..10000

Umberto Cerruti, Pseudoprimi di Fermat e numeri di Carmichael (in Italian), p. 10.

Index entries for sequences related to Carmichael numbers.

Mathematica

f[k_] := {60*k + 41, 90*k + 61, 150*k + 101}; Times @@ f[#]& /@ Select[Range[0, 500], And @@ PrimeQ[f[#]] &] (* Amiram Eldar, Apr 24 2024 *)

Prog

(Magma) [(60*n+41)*(90*n+61)*(150*n+101): n in [0..300]| IsPrime(60*n+41) and IsPrime(90*n+61) and IsPrime(150*n+101)];
(PARI) lista(kmax) = for(k = 0, kmax, if(isprime(60*k + 41) && isprime(90*k + 61) && isprime(150*k + 101), print1((60*k+41)*(90*k+61)*(150*k+101), ", "))); \\ Amiram Eldar, Apr 24 2024

Crossrefs

Cf. A002997, A033502.

Cf. A255512 (associated k).

Sequence in context: A083628 A212843 A270267 * A210074 A230484 A236874

Adjacent sequences: A255438 A255439 A255440 * A255442 A255443 A255444

Keyword

nonn,changed

Author

Vincenzo Librandi, Feb 24 2015

Extensions

First term added from Bruno Berselli, Feb 24 2015

Status

approved