Every Day Counts
Carol Prime Days
 
Age: 16,391 days
Date of birth

These are primes which are also Carol numbers.

Carol numbers are of the form (2n - 1)2 - 2

Carol numbers were first studied by Cletus Emmanuel, who named them after a friend, Carol G. Kirnon.

The sixth Carol prime is 1,046,527 so it's unlikely you'll ever have more than 5 Carol Prime Days. After that they go very big.

Remind me, please


Next Prime Events
Day Age
Event
Days Ahead
Year Age
01 Sep 2026
16,411
20
44
29 Jan 2027
16,561
170
45
29 Apr 2027
16,651
260
45
07 Nov 2027
16,843
452
46
06 May 2029
17,389
998
47
22 Aug 2029
17,497
1,106
47
31 Jan 2030
17,659
1,268
48
07 Jul 2031
18,181
1,790
49
16 Oct 2033
19,013
2,622
52
29 Oct 2034
19,391
3,000
53
27 Apr 2036
19,937
3,546
54
12 Mar 2060
28,657
12,266
78
10 Jun 2101
43,721
27,330
119
07 Nov 2114
48,619
32,228
133
03 Mar 2161
65,537
49,146
179
16 Apr 2256
100,279
83,888
274
06 Aug 2340
131,071
114,680
358
Ordinal
Day Age
Date
Age
1st
7
03 Oct 1981
0
2nd
47
12 Nov 1981
0
3rd
223
07 May 1982
0
4th
3,967
06 Aug 1992
10
5th
16,127
21 Nov 2025
44