138569

Properties

Appears in sequences

• Primes that are concatenations of k-th composite and k-th prime.at n=29A038532
• Primes p such that the differences between the 5 consecutive primes starting with p are (2,6,4,6).at n=20A078949
• Smaller member of a twin prime pair with a triangular sum.at n=24A086816
• Number of partitions of n^2 into squares not less than n.at n=45A093116
• Smallest number k such that M(n)^2-k*M(n)-1 is prime with M(n) = Mersenne primes = A000668(n).at n=23A139424
• Smallest prime p such that M(n)^2-p*M(n)-1 is prime with M(n)= Mersenne primes =A000668(n).at n=22A139428
• Numbers k such that (17*10^k - 77)/3 is prime.at n=30A273371
• Primes p such that p+2, p*(p+1)/2-2 and p*(p+1)/2+2 are also primes.at n=30A349336
• Prime numbersat n=12891