2227727

Properties

Appears in sequences

• Primes that contain digits 2 and 7 only.at n=18A020459
• Smallest n-digit prime containing only digits 2 and 7, or 0 if no such prime exists.at n=6A036938
• Let p be an element of A110028. Let L(p) be the sorted list of digits of p and let LL be the set of all L(p) with duplicates removed and ordered lexicographically. Then a(n) is the first element of A110028 such that L(a(n))=LL(n).at n=24A117608
• Prime numbersat n=164561