2,300

[Calendar]  This year is a non-leap year, following the adoption of the current Gregorian calendar, created by Pope Gregory XIII in 1582 to reform the old Julian calendar.

 

2,303

[Math.]  Square and cube of number 2303 use different digits: 23032 = 5,303,809 and 23033 = 12,214,672,127. 

 

2,310

[Math.]  Product of the first 5 prime numbers: 2310 = 2×3×5×7×11.

 

2,312

[Math.]  23122 = 5,345,344.

 

2,322

[Math.]  23223 = 12,519,490,248 = (0125+1949+0248)3.

 

2,332 & 2,341

[Sport]  One of soccer’s possible lineup tactics formations: (Pyramid) 2-3-5 (2 defenders, 3 midfielders and 5 forwards). A slightly modified forwards line makes: 2-3-4-1 (1 striker) or 2-3-3-2 (2 strikers).

 

2,333

[Math.]  A right-truncatable prime number: self, 233, 23 and 2 are prime numbers.  

 

2,339

[Math.]  A right-truncatable prime number: self, 233, 23 and 2 are prime numbers.

 

2,340

[Math.]  Sum (in degrees) of all internal angles of a 15-side polygon.

 

2,341

[Math.]  A prime number.

 

2,345

[Zip]  U.S. Postal Zip Code: Manomet, Massachusetts 02345.

 

2,346

[Math.]  A triangular number (sum of all integers from 1 to 68): 2346 = 1+2+…+67+68.

  

2,352

[Math.] 

5,955,264 = 4431×1344 = 2532×2352.

 

2,353

[Math.]  5,882,353 = 5882+23532 and 94,122,353 = 94122+23532, where 9412+588 = 10,000. 

 

2,354

[Math.]  2354 = 2222+33+55+44.

 

2,357

[Math.]  A prime number whose 4 digits are the first 4 single-digit prime numbers in order: 2, 3, 5 and 7.

 

[Trivia]  The largest prime number that can be displayed on a digital clock in the 24-hour format (excluding seconds and the colon “:”) is 23:57.

 

2,357

[Zip]  U.S. Postal Zip Code: North Easton, Massachusetts 02357. (first 4 prime numbers)

 

2,359

[Math.]  The largest number that can be displayed on a digital clock in the 24-hour format (excluding seconds and the colon “:”) is 23:59.

 

[Math.]  2359 = 2222+33+5+99.

 

2,373

[Math.]  8,856,036 = 6531×1356 = 3732×2373.

 

2,393

[Math.]  A right-truncatable prime number: self, 239, 23 and 2 are prime numbers.

 

2,394

[Math.]  Each ratio 16758/2394 = 7, using each of 9 digits 1-9 once, shows how to arrange a 9-book set on 2 shelves to mark the book #7.

 

[Math.]  11,807,208 = 4932×2394 = 8631×1368.

 

2,396

[Math.]  Seven square numbers using the same digits: 10242 = 1,048,576; 10282 = 1,056,784; 10422 = 1,085,764; 23962 = 5,740,816; 24012 = 5,764,801; 25992 = 6,754,801 and 28012 = 7,845,601.

 

2,399

[Math.]  A right-truncatable prime number: self, 239, 23 and 2 are prime numbers.