1741
This number is a prime.
The smallest prime p such that p9 is equal to the sum of 9 consecutive primes. [Rivera]
The largest emirp with the minimum possible digital length that contains all of the straight digits only. [Loungrides]
The smallest prime such that it and the next 5 primes are all equal to 1 (mod 6): 1741; 1747; 1753; 1759; 1777; 1783. [Post]
The first occurrence of two consecutive primes (1741, 1747) such that both use all of the straight digits. [Gupta]
The smallest mountain emirp formed by concatenating two double-digit primes. [Loungrides]
The start of the only occurrence of four consecutive primes, where each of them is a concatenation of two double-digit primes (1741, 1747, 1753, 1759). [Loungrides]
"That it will never come again is what makes life so sweet" is from Poem 1741 in the Emily Dickinson collection.