694409

Properties

Appears in sequences

• a(n) is the number of digits in the decimal expansion of Pi needed to contain a repeated n-digit substring.at n=10A159345
• Smallest of three consecutive primes whose average is a triangular number.at n=12A226150
• Primes p such that 1000p-1, 1000p-3, 1000p-7 and 1000p-9 are all prime.at n=25A243410
• Prime numbersat n=56138