Prime Curios!: 457

457
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The German submarine known as U-457 was sunk in the Barents Sea by depth charges from the British destroyer HMS Impulsive during WWII. [Wynn]

The first Honaker prime (p₈₈ = 457: 8+8 = 4+5+7) that is itself the subscript of another Honaker prime (p₄₅₇ = 3229: 4+5+7 = 3+2+2+9). [Beedassy]

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

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