a(n) is the least number with n prime factors (counted with multiplicity) that is the concatenation of two primes.

A374669

a(n) is the least number with n prime factors (counted with multiplicity) that is the concatenation of two primes.

Terms

    a(0) =23a(1) =22a(2) =27a(3) =132a(4) =32a(5) =729a(6) =192a(7) =2112a(8) =1792a(9) =5632a(10) =3072a(11) =59392a(12) =64512a(13) =90112a(14) =110592a(15) =950272a(16) =2260992a(17) =3244032a(18) =786432a(19) =30277632a(20) =7340032a(21) =23068672a(22) =12582912a(23) =494927872a(24) =1333788672a(25) =1375731712a(26) =704643072a(27) =3892314112a(28) =1879048192a(29) =37446746112

External references