Every Day Counts
Carol Prime Days
 
Age: 16,112 days
Date of birth
Your 5th Carol Prime Day is on
Friday
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
03 Oct 2025
16,127
15
44
03 Oct 2025
16,127
15
44
25 May 2026
16,361
249
44
14 Jun 2026
16,381
269
44
14 Jun 2026
16,381
269
44
14 Jun 2026
16,381
269
44
11 Mar 2027
16,651
539
45
19 Sep 2027
16,843
731
46
04 Jul 2029
17,497
1,385
47
19 May 2031
18,181
2,069
49
10 Sep 2034
19,391
3,279
53
09 Mar 2036
19,937
3,825
54
23 Jan 2060
28,657
12,545
78
22 Apr 2101
43,721
27,609
119
19 Sep 2114
48,619
32,507
133
13 Jan 2161
65,537
49,425
179
27 Feb 2256
100,279
84,167
274
18 Jun 2340
131,071
114,959
358
Ordinal
Day Age
Date
Age
1st
7
15 Aug 1981
0
2nd
47
24 Sep 1981
0
3rd
223
19 Mar 1982
0
4th
3,967
18 Jun 1992
10
5th
16,127
03 Oct 2025
44
1