Every Day Counts
Carol Prime Days
 
Age: 16,160 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 Jun 2025
16,183
23
44
26 Nov 2025
16,361
201
44
16 Dec 2025
16,381
221
44
16 Dec 2025
16,381
221
44
16 Dec 2025
16,381
221
44
12 Sep 2026
16,651
491
45
23 Mar 2027
16,843
683
46
05 Jan 2029
17,497
1,337
47
20 Nov 2030
18,181
2,021
49
14 Mar 2034
19,391
3,231
53
11 Sep 2035
19,937
3,777
54
27 Jul 2059
28,657
12,497
78
24 Oct 2100
43,721
27,561
119
23 Mar 2114
48,619
32,459
133
17 Jul 2160
65,537
49,377
179
31 Aug 2255
100,279
84,119
274
21 Dec 2339
131,071
114,911
358
Ordinal
Day Age
Date
Age
1st
7
16 Feb 1981
0
2nd
47
28 Mar 1981
0
3rd
223
20 Sep 1981
0
4th
3,967
21 Dec 1991
10
5th
16,127
06 Apr 2025
44