233

This number is a prime.

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

+ The larger of only two primes less than a googol formed by concatenating a number n followed by n 3's. The other is 13. [Loungrides]

+ 233 divides 239*241*251*257 + 1. Can you find five larger consecutive primes p < q < r < s < t such that p|qrst + 1? [Loungrides]

+ The smallest prime-digit prime that is the sum of three prime-digit primes (3+7+223). [Loungrides]

+ The only multidigit prime-digit Fibonacci prime. [Loungrides]

+ The smallest prime and the only known prime-digit prime that can be represented as the sum of eleven consecutive primes, i.e., 5 + 7 + 11 + ... + 37 + 41. [Loungrides]

(There is one curio for this number that has not yet been approved by an editor.)

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