2100001

Properties

Appears in sequences

• Primes whose sum of digits is 4.at n=18A062339
• Largest n-digit prime with minimum digit sum.at n=6A069664
• a(1) = 2, a(2) = 1; for n >= 3, a(n) = least prime not included earlier that divides the concatenation of all previous terms.at n=6A096097
• Primes sorted on digit sums, then on the primes.at n=22A157715
• Smallest prime ending in 10^n+1 in its base-10 representation.at n=4A185949
• Primes p such that if q is the next prime, A004086(p*q) = A004086(p)*A004086(q).at n=36A349709
• Prime numbersat n=155806