AMAZING NUMBER FACTS

1

Sums of squares then sums of cubes then...

2

Perfect numbers and sums of odd cubes

3

Odd triangles

4

Powers of triangular numbers

5

All the ones

6

Factors of factors

7

The powerful six

8

Square factor sums

9

Wilson's pattern

10

37 times

11

A prime rich formulae

12

Harmonic numbers and primes

13

The number 21322314

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Pascal's triangle and the Catalan numbers

15

Reverse decimal repeaters

16

More prime rich formulae

17

Square triangular numbers

18

Chopping for prime numbers

19

Pythagorean triples

20

Fangs for the vampire numbers

21

Division test for elevens

22

Armstrong numbers

23

Primes in arithmetic sequence

24

Sort, reverse and subtract (Kaprekar)

25

Add and times are the same

26

This continues or does it?

27

All nine digits

28

The largest known prime

29

Seven multiplications and a bit more

30

The multiples of root 2

31

Powerful sums

32

The first 206 billion decimal places of Pi

33

Golden primes

34

The Sieve of Eratosthenes

35

A prime-rich decade

36

Cabalistic Numerology

37

The 29th February

38

Fibonacci's Brothers

39

Square Permutations

40

The Divided Sum

41

The Beastly Number

42

Smith Numbers

43

Ordered Digital Equations

44

The Ultimate Palindrome

45

Square Products Minus 1

46

Bulgarian Patience

47

This doesn't continue or does it?

48

Very Large Number Contest

49

Repfigits

50

The Day Formula

51

Zig Zag Numbers

52

Counting to Infinity and Beyond

53

Unrepeatable Digits

54

Rabbit Numbers

55

Benjamin Franklin's Magic Square

56

A Mathematical Limerick

57

Polygonal Numbers

58

Morel's Triangle