840839
domain: N
Properties
Primality
- Prime
- yes
Appears in sequences
- Smaller of twin primes whose mean (average) is a multiple of A002110(6)=30030.at n=8A060232
- Primes that are the concatenation of k and k-1 for some k, where the concatenation of k-2 and k-3 is also prime.at n=11A156120
- Safe primes that are also highly cototient numbers.at n=16A209193
- Sophie Germain primes that are also highly cototient numbers.at n=34A209194
- Prime numbersat n=66947