39279991

Properties

Appears in sequences

• a(1)=1, then a(n)=2*a(n-1) if n is prime, a(n)=2*a(n-1)+1 if n not prime.at n=25A118255
• Primes whose binary representation shows the distribution of prime numbers using "0" for primes and "1" for nonprime numbers.at n=5A139119
• Prime numbersat n=2392428