[seqfan] Prime concatenation of n consecutive primes
zakseidov at yahoo.com
Sun Jul 11 12:58:36 CEST 2010
Not submitted, just for curious...
Smallest primes p such that concatenation of n consecutive primes starting with p is prime.
2 (=prime), 23 (concatenation of 2 consecutive primes = prime), 5711 (concatenation of 3 consecutive primes = prime), 235711 (concatenation of 4 consecutive primes = prime)
For primes that are concatenations of 2..6 consecutive primes see A030461, A030469, A030473, A086041, A099727.
See also A030997 Smallest prime which is a concatenation of n consecutive primes,
from where I took the pari code due M. F. Hasler.
BTW correct a(28) in b030997.txt is:
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