3,000 (separate page)

 

3,001

[Calendar]  The first year of the 3rd millennium.

 

3,001

[Math.]  Twin prime numbers: 2999 & 3001.  Other: 29,999,999 and 30,000,001.

 

3,003

[Math.]  A triangular number (sum of all integers from 1 to 77): 3003 = 1+2+…+76+77.

 

3,006

[Math.]  30062 = 9,036,036.

 

3,011

[Math.]  A prime number.  

30112 = 9,066,121 and 1,216,609 = 11032Both 1103 and 3011 are prime numbers.

 

3,024  

[Math.] 

 12×21 = 252 = 21×12             

12×42 = 504 = 21×24          24×21 =    504 = 42×12

12×63 = 756 = 21×36          24×63 = 1,512 = 42×36    

12×84 = 1,008 = 21×48       24×42 = 1,008 = 42×24

36×84 = 3,024 = 63×48       24×84 = 2,016 = 42×48.

 

3,025

[Math.]  2025 = (20+25)2 = 452 and 3025 = (30+25)2 = 552 and 45+55 = 100.

 

[Math.]  Sum of the first 10 cube numbers: 13+23+33+43+53+63+73+83+93+103 = 3025 = (1+2+3+4+5+6+7+8+9+10)2 = 552.

 

3,045

[Math.]  Two consecutive sums of consecutive numbers:

196+197+…+210 = 211+212+…+224 = 3045.

 

3,060

[Math.]  Sum (in degrees) of all internal angles of a 19-side polygon.

 

3,081

[Math.]  A triangular number (sum of all integers from 1 to 78): 3081 = 1+2+…+77+78.

 

3,087

[Math.]  147×(14+7) = 143+73 = 3,087. 

 

03nnn

[Zip]  U.S. Postal Zip Codes of New Hampshire: 030nn-038nn.

U.S. Postal Zip Codes of Maine: 039nn and 04nnn.