3527
This number is a prime.
Just showing those entries submitted by 'Beedassy': (Click here to show all)
The number of ways to fold a strip of ten blank stamps. Note that the digits are distinct primes. [Beedassy]
The only prime permutation of 2357 such that the
concatenation of both in any order forms a prime: 23573527
; 35272357. [Beedassy]
The smallest prime-digit prime that forms another prime
when each digit is repeated a number of times equal to its
complement: 33333335555522222222777. [Beedassy]
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