Every Day Counts
Carol Prime Days
 
Age: 17,848 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
23 Apr 2026
17,851
3
48
21 Aug 2026
17,971
123
49
19 Mar 2027
18,181
333
49
29 Jul 2027
18,313
465
50
26 Nov 2027
18,433
585
50
28 Jun 2029
19,013
1,165
52
11 Jul 2030
19,391
1,543
53
30 Aug 2030
19,441
1,593
53
08 Jan 2032
19,937
2,089
54
22 Mar 2032
20,011
2,163
54
23 Nov 2055
28,657
10,809
78
19 Feb 2097
43,721
25,873
119
20 Jul 2110
48,619
30,771
133
13 Nov 2156
65,537
47,689
179
28 Dec 2251
100,279
82,431
274
18 Apr 2336
131,071
113,223
358
10 Aug 7794
2,124,679
2,106,831
5817
Ordinal
Day Age
Date
Age
1st
7
15 Jun 1977
0
2nd
47
25 Jul 1977
0
3rd
223
17 Jan 1978
0
4th
3,967
18 Apr 1988
10
5th
16,127
03 Aug 2021
44