123229

Properties

Appears in sequences

• Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 25.at n=28A031613
• Start of a run of consecutive primes of length n each ending with the same digit.at n=4A054681
• 5 consecutive primes differ by a multiple of 2n starting at a(n).at n=4A054702
• Initial prime in first sequence of n primes congruent to 4 modulo 5. The first prime in a sequence of length n all ending with the digit 9.at n=4A057636
• Duplicate of A054681.at n=4A084560
• Earliest occurrences of n consecutive primes ending in the same decimal digit, written as triangle T(n,k), 1<=k<=n.at n=10A329594
• Array read by downward antidiagonals: for m >= 3 and n >= 1, T(m,n) is the first prime that starts a string of exactly n consecutive primes that are congruent (mod m).at n=23A359272
• Prime numbersat n=11582