4 is the only number with the same number of letters in English ("four"). Submitted by: Mark Andrei P. Pagana - Cavite, Philippines
2520 is the smallest number divisible by 1 to 10 (Least Common Multiple of 1, 2, 3, 4, 5, 6, 7, 8, 9, 10). Submitted by: Jimmy Horton - England
A 3-digit result of any number multiplied by 11 has its middle digit the sum of other two, like: 21 × 11 = 231 (2+1=3)13 × 11 = 143 (1+3=4)44 × 11 = 484 (4+4=8) ...etc. Submitted by: Catrine Montano - Surigao, Philippines
The value of zero was first used by the ancient Indian mathematician Aryabhata. Submitted by: Sundara Moorthy - Tiruppur, Tamil Nadu, India
The sum of the digits of a number which is a multiple of 9 is always 9, ie, 45 :4+5 = 91980 : 1+9+8+0=18 : 1+8 = 9214164 : 2+1+4+1+6+4=18 : 1+8 = 9etc.sciensational.comSubmitted by: Vighneswar - India
The implicit curve equation (x2+y2-1)3-x2y3=0 produces the heart shape. Submitted by: Hyde - Toronto, Ontario, Canada
The term Googol(10100, ie, 10 followed by 100 zeros) was invented by a 9-year old boy Milton Sirotta. Submitted by: Cynthia - San Francisco, California, United States
The Reuleaux Triangle is a shape of constant width other than a circle. Submitted by: Adarsh - Guraon, India
The Seven Unsolved Millennium Prize Math Problems are: 1. P versus NP problem 2. Hodge Conjecture 3. Poincaré conjecture (solved in 2002) 4. Riemann Hypothesis 5. Yang-Mills Existence and Mass Gap 6. Navier-Stokes Existence and Smoothness 7. Birch and Swinnerton-Dyer ConjectureSubmitted by: Ravi - Mississauga, Ontario, Canada
The Fibonacci sequence are numbers where each following number is the sum of the previous two:0 1 1 2 3 5 8 13 21 34 55 89 ...Submitted by: Matt - California, United States
A Palindrome Number is a number that reads the same backwards and forward, e.g. 13431. Submitted by: Yusuf - Victoria, Australia
A US dollar can be made into small change in 293 ways.
You can remember the value of Pi(3.1415926) by counting each word's letters in "May I have a large container of coffee?"sciensational.com
142857 is a cyclic number, i.e., its digits are rotated around when multiplied by any number from 1 to 6. Like this: 142857 × 1 = 142857 142857 × 5 = 7 14285 142857 × 4 = 57 1428 142857 × 6 = 857 142 142857 × 2 = 2857 14 142857 × 3 = 42857 1Submitted by: Moi, Canada.
1089 multiplied by 9 gives an exact reverse: 9801.
From 0 to 1000, the letter "A" only appears in 1000("one thousand"). Submitted by: Ramil Argete
2 is called the "oddest" Even-Prime number. 2 is a unique Even-Prime because while all Evens are divisible by 2, any number apart from 2 that is divisible by 2, is not a Prime.sciensational.com
4 is the only number with the same number of letters in English ("four"). Submitted by: Mark Andrei P. Pagana - Cavite, Philippines
2520 is the smallest number divisible by 1 to 10 (Least Common Multiple of 1, 2, 3, 4, 5, 6, 7, 8, 9, 10). Submitted by: Jimmy Horton - England
A 3-digit result of any number multiplied by 11 has its middle digit the sum of other two, like: 
The value of zero was first used by the ancient Indian mathematician Aryabhata. Submitted by: Sundara Moorthy - Tiruppur, Tamil Nadu, India
The sum of the digits of a number which is a multiple of 9 is always 9, ie, 
The implicit curve equation (x2+y2-1)3-x2y3=0 produces the heart shape. Submitted by: Hyde - Toronto, Ontario, Canada
The term Googol (10100, ie, 10 followed by 100 zeros) was invented by a 9-year old boy Milton Sirotta. Submitted by: Cynthia - San Francisco, California, United States
The Reuleaux Triangle is a shape of constant width other than a circle. Submitted by: Adarsh - Guraon, India
The Seven Unsolved Millennium Prize Math Problems are:
The Fibonacci sequence are numbers where each following number is the sum of the previous two:
A Palindrome Number is a number that reads the same backwards and forward, e.g. 13431. Submitted by: Yusuf - Victoria, Australia
A US dollar can be made into small change in 293 ways. 
You can remember the value of Pi (3.1415926) by counting each word's letters in "May I have a large container of coffee?"sciensational.com 
142857 is a cyclic number, i.e., its digits are rotated around when multiplied by any number from 1 to 6. Like this:
1089 multiplied by 9 gives an exact reverse: 9801. 
From 0 to 1000, the letter "A" only appears in 1000 ("one thousand"). Submitted by: Ramil Argete 
2 is called the "oddest" Even-Prime number. 2 is a unique Even-Prime because while all Evens are divisible by 2, any number apart from 2 that is divisible by 2, is not a Prime.sciensational.com