23456789
domain: N
Properties
Primality
- Prime
- yes
Appears in sequences
- Primes with consecutive (ascending) digits.at n=10A006055
- Duplicate of A006055.at n=10A006510
- Lengths increase by 1, digits cycle through positive digits.at n=7A007923
- Prime concatenated analog clock numbers read clockwise.at n=9A036342
- Prime concatenated analog clock numbers (clockwise and counterclockwise).at n=13A036344
- Numbers whose list of divisors includes each digit 1-9 equally often.at n=20A038564
- Primes in A007923.at n=2A050234
- Primes with digits in ascending order that differ exactly by 1.at n=8A052017
- Smallest prime formed by concatenating n consecutive increasing numbers, or 0 if no such prime exists.at n=7A052077
- a(n) = (10^n-1)*(91/81)-n*10^n/9.at n=7A064616
- a(1) = 2; then the sequence of smallest primes (no zero digits to avoid ambiguity) not included earlier the concatenation of which is the cyclic pattern 23456789123456789123...at n=7A068826
- Largest n-digit prime with strictly increasing digits.at n=7A071363
- First occurrence of an n-digit prime as a substring in the concatenation of the natural numbers 12345678910111213141516171819202122232425262728293031....at n=7A073175
- Primes in the concatenation of consecutive numbers beginning with 2.at n=2A089987
- 8-digit primes formed by concatenating the first decimal digits of {2^n, ..., 9^n} with the n's given by A097616.at n=0A097617
- Primes from merging of 8 successive digits in decimal expansion of the Champernowne Constant.at n=0A104951
- Smallest prime of the form: n successive positive integers in ascending order followed by a 9. a(3k) = 0 as no such prime exists.at n=6A114757
- Primes with consecutive digits.at n=14A120805
- a(n) = Sum_{ k = 0 to n-1} ( subtract k modulo 9 from 9, multiply this by k-th power of 10 ).at n=7A133486
- Numbers with digits in ascending order that differ exactly by 1.at n=43A138141