1111211

Properties

Appears in sequences

• Primes that contain digits 1 and 2 only.at n=14A020450
• Smallest n-digit prime containing only digits 1 or 2 or -1 if no such prime exists.at n=6A036229
• Multiplicative primes: product of digits is a prime.at n=31A046703
• Largest prime that is a concatenation of the parts of a partition of n, or 0 if no such prime exists.at n=7A069869
• Leftmost 1 is converted to a 2, which then propagates one step at a time until it is rightmost; then it changes to a pair of 1's and the process repeats.at n=33A071762
• Duplicate of A069869.at n=7A079841
• Primes p such that the next prime after p can be obtained from p by adding the product of the digits of p.at n=21A089823
• Prime numbers with prime sum of any two digits.at n=21A091939
• Primes from merging of 7 successive digits in decimal expansion of the Champernowne Constant.at n=7A104950
• Primes with digital product = 2.at n=6A107612
• Prime numbers for which the product of the digits is a noncomposite number.at n=32A117835
• Chen primes for which the product of the digits is also a Chen prime.at n=22A118722
• Smallest number appearing exactly n times in the concatenation of all integers from 1 to itself.at n=12A176779
• Numbers with digital product = 2.at n=23A199986
• Primes p such that one digit appears exactly six times together with a single different digit.at n=2A257937
• The smallest prime number formed by the concatenation of consecutive powers of n beginning with 1^0 = "1," and ending with a trailing "1" - or "0," if no such prime number exists.at n=9A267720
• Lesser of two consecutive primes such that the product of its digits is also prime and the sum of the digits of the other is composite.at n=10A370848
• Lesser of two consecutive primes such that the product of its digits is also prime and that of the other is composite.at n=25A370851
• Prime numbersat n=86544