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Highest-scoring palindrome numbers

Numbers that read the same forwards and backwards, with at least two digits. Compare their additional traits and explore each exact score.

Exact population: 1,989 numbers · Algorithm 1.1.0

Top 100 by score among 1,989 palindromes numbers. Equal scores share a rank; ties at the cutoff may extend beyond this list.
Rank Number Score Global rank Same length Patterns
#1 55 1,377 Top <0.01% Top 1.11% 2 digits Fibonacci number · All digits identical · Palindrome
#2 33 1,282 Top <0.01% Top 3.33% 2 digits All digits identical · Palindrome · Binary palindrome
#3 3,003 1,225 Top <0.01% Top 0.01% 4 digits Hex repdigit · Triangular number · Palindrome
#4 11 1,220 Top <0.01% Top 6.67% 2 digits All digits identical · Palindrome · Prime
#5 66 1,173 Top <0.01% Top 7.78% 2 digits All digits identical · Triangular number · Palindrome
#6 22 1,140 Top <0.01% Top 10.0% 2 digits All digits identical · Palindrome · Semiprime
#7 99 1,121 Top <0.01% Top 11.1% 2 digits All digits identical · Palindrome · Binary palindrome
#7 111 1,121 Top <0.01% Top 0.11% 3 digits All digits identical · Palindrome · Semiprime
#9 666 1,088 Top <0.01% Top 0.22% 3 digits All digits identical · Triangular number · Palindrome
#10 44 1,048 Top <0.01% Top 13.3% 2 digits All digits identical · Palindrome · Happy number
#11 313 1,023 Top <0.01% Top 0.44% 3 digits Palindrome · Binary palindrome · Prime
#12 121 1,019 Top <0.01% Top 0.56% 3 digits Perfect square · Palindrome · Semiprime
#13 222 1,015 Top <0.01% Top 0.78% 3 digits All digits identical · Palindrome · Harshad number
#14 77 1,012 Top <0.01% Top 20.0% 2 digits All digits identical · Palindrome · Semiprime
#15 69,696 1,011 Top <0.01% Top <0.01% 5 digits ABAB pattern · Perfect square · Palindrome
#16 1,111 1,007 Top <0.01% Top 0.03% 4 digits All digits identical · Palindrome · Semiprime
#17 1,331 991 Top <0.01% Top 0.06% 4 digits Perfect cube · Palindrome · Only two distinct digits
#17 828,828 991 Top <0.01% Top <0.01% 6 digits ABCABC pattern · Triangular number · Palindrome
#19 10,101 988 Top <0.01% Top <0.01% 5 digits ABAB pattern · Palindrome · Only two distinct digits
#20 343 978 Top <0.01% Top 1.11% 3 digits Perfect cube · Palindrome · Repeated digit
#21 333 973 Top <0.01% Top 1.22% 3 digits All digits identical · Palindrome · Harshad number
#22 999,999 966 Top <0.01% Top <0.01% 6 digits All digits identical · Palindrome
#23 888,888 958 Top <0.01% Top <0.01% 6 digits All digits identical · Palindrome · Highly divisible
#24 696,696 954 Top <0.01% Top <0.01% 6 digits ABCABC pattern · Palindrome · Highly divisible
#25 88 953 Top <0.01% Top 26.7% 2 digits All digits identical · Palindrome
#26 73,737 947 Top <0.01% Top <0.01% 5 digits ABAB pattern · Palindrome · Binary palindrome
#27 444 941 Top <0.01% Top 1.56% 3 digits All digits identical · Palindrome · Harshad number
#28 171 937 Top <0.01% Top 1.89% 3 digits Triangular number · Palindrome · Harshad number
#29 101 929 Top <0.01% Top 2.11% 3 digits Palindrome · Prime · Repeated digit
#30 989,989 924 Top <0.01% Top <0.01% 6 digits ABCABC pattern · Palindrome · Only two distinct digits
#31 555 917 Top <0.01% Top 2.22% 3 digits All digits identical · Palindrome · Harshad number
#32 252,252 912 Top <0.01% Top <0.01% 6 digits ABCABC pattern · Palindrome · Highly divisible
#33 20,202 905 Top <0.01% Top <0.01% 5 digits ABAB pattern · Palindrome · Only two distinct digits
#34 585,585 898 Top <0.01% Top <0.01% 6 digits ABCABC pattern · Palindrome · Binary palindrome
#35 2,222 895 Top <0.01% Top 0.12% 4 digits All digits identical · Palindrome
#36 32,323 894 Top <0.01% Top <0.01% 5 digits ABAB pattern · Palindrome · Only two distinct digits
#37 717 892 Top <0.01% Top 2.78% 3 digits Palindrome · Binary palindrome · Semiprime
#38 888 888 Top <0.01% Top 2.89% 3 digits All digits identical · Palindrome · Harshad number
#38 12,121 888 Top <0.01% Top <0.01% 5 digits ABAB pattern · Palindrome · Only two distinct digits
#40 777 887 Top <0.01% Top 3.00% 3 digits All digits identical · Palindrome · Harshad number
#41 30,303 885 Top <0.01% Top <0.01% 5 digits ABAB pattern · Palindrome · Only two distinct digits
#42 14,141 884 Top <0.01% Top 0.01% 5 digits ABAB pattern · Palindrome · Only two distinct digits
#42 98,989 884 Top <0.01% Top 0.01% 5 digits ABAB pattern · Palindrome · Only two distinct digits
#44 999 877 Top <0.01% Top 3.22% 3 digits All digits identical · Palindrome · Harshad number
#45 21,212 874 Top <0.01% Top 0.01% 5 digits ABAB pattern · Palindrome · Only two distinct digits
#46 101,101 872 Top <0.01% Top <0.01% 6 digits ABCABC pattern · Palindrome · Only two distinct digits
#46 898,898 872 Top <0.01% Top <0.01% 6 digits ABCABC pattern · Palindrome · Only two distinct digits
#46 979,979 872 Top <0.01% Top <0.01% 6 digits ABCABC pattern · Palindrome · Only two distinct digits
#49 7,447 868 Top 0.01% Top 0.17% 4 digits Palindrome · Binary palindrome · Only two distinct digits
#50 78,787 866 Top 0.01% Top 0.01% 5 digits ABAB pattern · Palindrome · Only two distinct digits
#51 95,959 864 Top 0.01% Top 0.01% 5 digits ABAB pattern · Palindrome · Only two distinct digits
#52 13,131 863 Top 0.01% Top 0.01% 5 digits ABAB pattern · Palindrome · Only two distinct digits
#53 31,313 862 Top 0.01% Top 0.02% 5 digits ABAB pattern · Palindrome · Only two distinct digits
#54 484 861 Top 0.01% Top 3.78% 3 digits Perfect square · Palindrome · Repeated digit
#55 41,414 858 Top 0.01% Top 0.02% 5 digits ABAB pattern · Palindrome · Only two distinct digits
#56 131 857 Top 0.01% Top 3.89% 3 digits Palindrome · Prime · Repeated digit
#57 18,181 856 Top 0.01% Top 0.02% 5 digits ABAB pattern · Palindrome · Only two distinct digits
#57 94,949 856 Top 0.01% Top 0.02% 5 digits ABAB pattern · Palindrome · Only two distinct digits
#59 23,232 853 Top 0.01% Top 0.02% 5 digits ABAB pattern · Palindrome · Only two distinct digits
#60 3,333 851 Top 0.01% Top 0.20% 4 digits All digits identical · Palindrome
#60 11,111 851 Top 0.01% Top 0.02% 5 digits All digits identical · Palindrome · Semiprime
#62 16,161 850 Top 0.01% Top 0.02% 5 digits ABAB pattern · Palindrome · Only two distinct digits
#62 96,969 850 Top 0.01% Top 0.02% 5 digits ABAB pattern · Palindrome · Only two distinct digits
#64 202 849 Top 0.01% Top 4.11% 3 digits Palindrome · Semiprime · Repeated digit
#65 676 845 Top 0.01% Top 4.44% 3 digits Perfect square · Palindrome · Repeated digit
#66 1,001 844 Top 0.01% Top 0.26% 4 digits Palindrome · Only two distinct digits · Double pair
#67 15,151 843 Top 0.01% Top 0.03% 5 digits ABAB pattern · Palindrome · Only two distinct digits
#67 97,979 843 Top 0.01% Top 0.03% 5 digits ABAB pattern · Palindrome · Only two distinct digits
#69 72,727 840 Top 0.01% Top 0.03% 5 digits ABAB pattern · Palindrome · Only two distinct digits
#69 74,747 840 Top 0.01% Top 0.03% 5 digits ABAB pattern · Palindrome · Only two distinct digits
#69 76,767 840 Top 0.01% Top 0.03% 5 digits ABAB pattern · Palindrome · Only two distinct digits
#72 34,343 838 Top 0.01% Top 0.03% 5 digits ABAB pattern · Palindrome · Only two distinct digits
#73 595 835 Top 0.01% Top 4.56% 3 digits Triangular number · Palindrome · Repeated digit
#73 58,585 835 Top 0.01% Top 0.03% 5 digits ABAB pattern · Palindrome · Only two distinct digits
#73 969,969 835 Top 0.01% Top <0.01% 6 digits ABCABC pattern · Palindrome · Only two distinct digits
#76 35,353 834 Top 0.01% Top 0.03% 5 digits ABAB pattern · Palindrome · Only two distinct digits
#77 12,321 831 Top 0.01% Top 0.03% 5 digits Perfect square · Palindrome · Ascending segment
#77 40,404 831 Top 0.01% Top 0.03% 5 digits ABAB pattern · Palindrome · Only two distinct digits
#79 585 830 Top 0.02% Top 4.67% 3 digits Palindrome · Binary palindrome · Repeated digit
#79 89,898 830 Top 0.02% Top 0.04% 5 digits ABAB pattern · Palindrome · Only two distinct digits
#81 50,505 829 Top 0.02% Top 0.04% 5 digits ABAB pattern · Palindrome · Only two distinct digits
#82 8,778 828 Top 0.02% Top 0.28% 4 digits Triangular number · Palindrome · Only two distinct digits
#83 151 824 Top 0.02% Top 4.78% 3 digits Palindrome · Prime · Repeated digit
#83 85,858 824 Top 0.02% Top 0.04% 5 digits ABAB pattern · Palindrome · Only two distinct digits
#85 4,444 820 Top 0.02% Top 0.30% 4 digits All digits identical · Palindrome
#86 5,555 819 Top 0.02% Top 0.31% 4 digits All digits identical · Palindrome · Happy number
#87 9,009 818 Top 0.02% Top 0.32% 4 digits Palindrome · Binary palindrome · Only two distinct digits
#88 45,454 817 Top 0.02% Top 0.04% 5 digits ABAB pattern · Palindrome · Only two distinct digits
#89 51,515 816 Top 0.02% Top 0.04% 5 digits ABAB pattern · Palindrome · Only two distinct digits
#90 54,545 815 Top 0.02% Top 0.04% 5 digits ABAB pattern · Palindrome · Only two distinct digits
#91 141 812 Top 0.02% Top 5.22% 3 digits Palindrome · Semiprime · Repeated digit
#91 303 812 Top 0.02% Top 5.22% 3 digits Palindrome · Semiprime · Repeated digit
#91 38,383 812 Top 0.02% Top 0.04% 5 digits ABAB pattern · Palindrome · Only two distinct digits
#94 43,434 811 Top 0.02% Top 0.04% 5 digits ABAB pattern · Palindrome · Only two distinct digits
#95 24,242 810 Top 0.02% Top 0.05% 5 digits ABAB pattern · Palindrome · Only two distinct digits
#96 9,999 809 Top 0.02% Top 0.37% 4 digits All digits identical · Palindrome
#97 5,995 807 Top 0.02% Top 0.38% 4 digits Triangular number · Palindrome · Only two distinct digits
#98 121,121 805 Top 0.02% Top <0.01% 6 digits ABCABC pattern · Palindrome · Only two distinct digits
#98 202,202 805 Top 0.02% Top <0.01% 6 digits ABCABC pattern · Palindrome · Only two distinct digits
#98 797,797 805 Top 0.02% Top <0.01% 6 digits ABCABC pattern · Palindrome · Only two distinct digits

Global rank uses all 1,000,001 numbers. Same-length rank uses only numbers with that digit length, including ties. These are comparison populations for the same score; the rarity tier continues to use the global population.

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