This repository contains 50+ Number programs in java designed to solve and verify various types of numbers, such as prime numbers, Armstrong numbers, decimal to binary, and many more. Users can easily check if a number belongs to a specific category by running the provided Java programs, and you can also find specific numbers within a given range.

To fully understand and utilize these programs, you should have a basic knowledge of the following Java concepts:

• Data types
• Control flow (if-else statements, loops)
• ASCII values
• Methods (including return and break statements)
• Scanner class and static members

• Please enter only positive integers.
• When converting from hexadecimal to decimal, ensure you enter only valid hexadecimal characters.
• The names of program files may differ from those provided below.

1. Abundant Number
2. Adam Number
3. Amicable Number
4. Armstrong Number
5. Automorphic Number
6. Binary to Decimal
7. Bouncy Number
8. Catalan Number
9. Circular Prime Number
10. Cube Number
11. Decimal to Binary
12. Decimal to Hexadecimal
13. Decimal to Octal
14. Deficient Number
15. Digit Count
16. Digit Sum
17. Disarium Number
18. Duck Number
19. Dudeney Number
20. Evil Number
21. Factor of a Number
22. Factorial of a Number
23. Fascinating Number
24. Fermat Number
25. Fermat Prime Number
26. Fibonacci Number
27. Harshad Number
28. HCF of 2 Numbers
29. Hexadecimal to Decimal
30. Kaprekar Number
31. LCM of 2 Numbers
32. Lucas Number
33. Magic Number
34. Mersenne Number
35. Mersenne Prime Number
36. Neon Number
37. Octal to Decimal
38. Palindrome Number
39. Pell Number
40. Perfect Number
41. Peterson Number
42. Power of a Number
43. Prime Number
44. Pronic Number
45. Ramanujan Number
46. Reverse of a Number
47. Smith Number
48. Spy Number
49. Square Number
50. Sum of N Natural Numbers
51. Sum of Digits of a Number
52. SuperPrime Number
53. Triangular Number
54. Trimorphic Number
55. Twisted Prime Number
56. Ugly Number
57. DemoRangeofNo
58. RangeofNo

To find the range of specified numbers, a separate program is provided in the "RangeofNo.java" file.

• Instructions:
  • Carefully read the instructions included in this file.
  • The "DemoRangeofNo.java" file demonstrates how to use the range program specifically for Pell numbers, showing the list of Pell numbers within user-specified starting and ending values.

This repository is an excellent resource for exploring number theory using Java! For any suggestions or to connect with me, please check out my portfolio.