This number is a prime.

Just showing those entries submitted by 'Silva': (Click here to show all)

+ The smaller of the only two primes formed from consecutive digits repeated each-other times: one 2, two 1s. [Silva]

+ The smallest prime formed from two other primes, one of which is the sum of the digits of the other. [Silva]

+ 211 is the product plus the sum of the first four non-prime numbers. [Silva]

+ The smallest prime whose resersal is the sum of consecutive primes (53 + 59). [Silva]

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