Numbers n such that a^r + b^r + c^r + ... is prime, where a*b*c* ... is the prime factorization of n and r is the product of the nonzero digits of n.
A108697
Numbers n such that a^r + b^r + c^r + ... is prime, where a*b*c* ... is the prime factorization of n and r is the product of the nonzero digits of n.
Terms
- a(0) =10a(1) =11a(2) =12a(3) =14a(4) =22a(5) =40a(6) =54a(7) =101a(8) =122a(9) =136a(10) =250a(11) =261a(12) =300a(13) =328a(14) =500a(15) =539a(16) =704a(17) =720a(18) =850a(19) =1001a(20) =1016a(21) =1020a(22) =1110a(23) =1112a(24) =1140a(25) =1210a(26) =1402a(27) =2121a(28) =2211a(29) =2220
External references
- oeis: A108697