Every Day Counts
Carol Prime Days
 
Age: 16,111 days
Date of birth
Your 5th Carol Prime Day is on
Monday
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
19 Jul 2025
16,111
today
44
04 Aug 2025
16,127
16
44
26 Mar 2026
16,361
250
44
15 Apr 2026
16,381
270
44
15 Apr 2026
16,381
270
44
15 Apr 2026
16,381
270
44
10 Jan 2027
16,651
540
45
21 Jul 2027
16,843
732
46
05 May 2029
17,497
1,386
47
20 Mar 2031
18,181
2,070
49
12 Jul 2034
19,391
3,280
53
09 Jan 2036
19,937
3,826
54
24 Nov 2059
28,657
12,546
78
21 Feb 2101
43,721
27,610
119
21 Jul 2114
48,619
32,508
133
14 Nov 2160
65,537
49,426
179
29 Dec 2255
100,279
84,168
274
19 Apr 2340
131,071
114,960
358
Ordinal
Day Age
Date
Age
1st
7
16 Jun 1981
0
2nd
47
26 Jul 1981
0
3rd
223
18 Jan 1982
0
4th
3,967
19 Apr 1992
10
5th
16,127
04 Aug 2025
44
1