3333773

Properties

Appears in sequences

• Primes that contain digits 3 and 7 only.at n=27A020463
• 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=34A117608
• Numbers of form 21k+1 or 21k+2 that use only digits 3 and 7.at n=12A152853
• Prime numbersat n=239150