121123

Properties

Appears in sequences

• Primes that are concatenations of n with n + 2.at n=16A032625
• Lucky numbers that are concatenations of n with n + 2.at n=13A032652
• Primes p such that p-2 and p+2 are divisible by a cube.at n=17A089202
• a(n) = nextprime(A090117(n)), the smallest prime following squares listed in A090117 and also the distance of a(n) from the preceding prime is 2*n.at n=20A090119
• Primes with digital product = 12.at n=27A107697
• Sorted list of strings that can be obtained by starting with 123 and repeatedly doubling any substring in place.at n=20A135475
• a(n) = n base 5, under morphism f(1) = 121, f(2) = 123, f(3) = 141, f(4) = 142, or 0 if n base 5 has a zero.at n=6A137850
• Prime numbersat n=11400