In the crossnumber puzzle below, two cells have already been filled in with digits: a 7 and a 3. The empty squares represent one digit each and the black squares separate the numbers..

• When filled in, the horizontal and vertical sequences of digits will represent eleven 2- or 3-digit prime numbers.
• No digit appears more than once in any given row, column or either of the long diagonals.
• No even digit appears more than once anywhere.

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  7 ■ ■ ■ □
  □ □ ■ □ □
  ■ 3 □ □ ■
  □ □ ■ □ □
  □ ■ ■ ■ □

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There are no leading zeros in any of the primes. <hr> From Enigma No. 1755, "Sudoprime II", by Peter Chamberlain, New Scientist, 29 June 2013, page 30.