Palindrome Number Calculator

Input a number to check if it's a palindrome; input a range to generate all palindrome numbers within it.

Palindrome Number Check or Generate

What Is a Palindrome Number?

A palindrome number reads the same forward and backward. For example, 121, 1331, and 12321 are all palindrome numbers. While palindrome numbers are specific to numeric values, the concept also applies to certain strings, such as words or phrases that exhibit the same characteristic.

How to Determine if a Number Is a Palindrome

  1. Convert to a String: Change the number into a string format for easy comparison.
  2. Reverse the String: Reverse the string to create a new one.
  3. Compare: If the original string matches the reversed string, the number is a palindrome. Otherwise, it is not a palindrome.

Examples

Example 1: Is 121 a palindrome?

Solution:

Original Number: 121

Converted to String: '121'

Reversed String: '121'

Comparison: '121' == '121'

Result: 121 is a palindrome.

Example 2: Is 123 a palindrome?

Solution:

Original Number: 123

Converted to String: '123'

Reversed String: '321'

Comparison: '123' != '321'

Result: 123 is not a palindrome.

Example 3: Is 1331 a palindrome?

Solution:

Original Number: 1331

Converted to String: '1331'

Reversed String: '1331'

Comparison: '1331' == '1331'

Result: 1331 is a palindrome.

First 100 Palindrome Numbers

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 11
  • 22
  • 33
  • 44
  • 55
  • 66
  • 77
  • 88
  • 99
  • 101
  • 111
  • 121
  • 131
  • 141
  • 151
  • 161
  • 171
  • 181
  • 191
  • 202
  • 212
  • 222
  • 232
  • 242
  • 252
  • 262
  • 272
  • 282
  • 292
  • 303
  • 313
  • 323
  • 333
  • 343
  • 353
  • 363
  • 373
  • 383
  • 393
  • 404
  • 414
  • 424
  • 434
  • 444
  • 454
  • 464
  • 474
  • 484
  • 494
  • 505
  • 515
  • 525
  • 535
  • 545
  • 555
  • 565
  • 575
  • 585
  • 595
  • 606
  • 616
  • 626
  • 636
  • 646
  • 656
  • 666
  • 676
  • 686
  • 696
  • 707
  • 717
  • 727
  • 737
  • 747
  • 757
  • 767
  • 777
  • 787
  • 797
  • 808
  • 818
  • 828
  • 838
  • 848
  • 858
  • 868
  • 878
  • 888
  • 898
  • 909
  • 919