Every Day Counts
Carol Prime Days
 
Age: 16,125 days
Date of birth
Your 5th Carol Prime Day is on
Thursday
when you will be
16,127 days old

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
30 Oct 2025
16,127
2
44
30 Oct 2025
16,127
2
44
21 Jun 2026
16,361
236
44
11 Jul 2026
16,381
256
44
11 Jul 2026
16,381
256
44
11 Jul 2026
16,381
256
44
07 Apr 2027
16,651
526
45
16 Oct 2027
16,843
718
46
31 Jul 2029
17,497
1,372
47
15 Jun 2031
18,181
2,056
49
07 Oct 2034
19,391
3,266
53
05 Apr 2036
19,937
3,812
54
19 Feb 2060
28,657
12,532
78
19 May 2101
43,721
27,596
119
16 Oct 2114
48,619
32,494
133
09 Feb 2161
65,537
49,412
179
25 Mar 2256
100,279
84,154
274
15 Jul 2340
131,071
114,946
358
Ordinal
Day Age
Date
Age
1st
7
11 Sep 1981
0
2nd
47
21 Oct 1981
0
3rd
223
15 Apr 1982
0
4th
3,967
15 Jul 1992
10
5th
16,127
30 Oct 2025
44
1