Every Day Counts
Carol Prime Days
 
Age: 16,579 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
12 Oct 2025
16,603
24
45
29 Nov 2025
16,651
72
45
09 Dec 2025
16,661
82
45
09 Jun 2026
16,843
264
46
07 Dec 2027
17,389
810
47
24 Mar 2028
17,497
918
47
02 Sep 2028
17,659
1,080
48
06 Feb 2030
18,181
1,602
49
18 May 2032
19,013
2,434
52
31 May 2033
19,391
2,812
53
28 Nov 2034
19,937
3,358
54
13 Oct 2058
28,657
12,078
78
10 Jan 2100
43,721
27,142
119
09 Jun 2113
48,619
32,040
133
04 Oct 2159
65,537
48,958
179
17 Nov 2254
100,279
83,700
274
09 Mar 2339
131,071
114,492
358
Ordinal
Day Age
Date
Age
1st
7
05 May 1980
0
2nd
47
14 Jun 1980
0
3rd
223
07 Dec 1980
0
4th
3,967
09 Mar 1991
10
5th
16,127
23 Jun 2024
44