43243201

Properties

Appears in sequences

• Numbers k > 1 such that sigma(phi(k))/sigma(k) > sigma(phi(j))/sigma(j) for all 1 < j < k.at n=37A067573
• Primes p such that p-1 is a highly composite number.at n=20A072826
• Smallest prime == 1 mod first n composite numbers.at n=16A075063
• Smallest prime == 1 mod first n composite numbers.at n=17A075063
• Smallest prime == 1 mod first n composite numbers.at n=18A075063
• Smallest prime == 1 mod first n composite numbers.at n=19A075063
• Smallest prime == 1 mod first n composite numbers.at n=20A075063
• Prime numbersat n=2618371