Tuesday, December 22, 2009

1900

1900 = 22 x 52 x 19.

1900 has the representation 1900 = 23 35 - 44.

There are 1900 prime numbers less than or equal to 215.

1900 is a 13-gonal (triskaeidecagonal or tridecagonal) number.

1900 is the sum of eight consecutive primes: 1900 = 223 + 227 + 229 + 233 + 239 + 241 + 251 + 257.


1900 is the largest palindrome in Roman numerals: MCM.

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