Prime Curios!: 1952

1952
(another Prime Pages' Curiosity)

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The year 1952 saw the discovery of five primes which were the largest known prime at the time of their discovery. This is the most record-sized primes discovered in any year so far. [Rupinski]

1+9+5+2 & 1952^(1+9+5+2) + (1+9+5+2) are primes. Note that 1952 is the earliest four-digit number with this property. [Firoozbakht]

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