# Prime Numbers Whose English Names Have a Prime Number of Letters

Contents

## Introduction

The letter count includes only letters; spaces and hyphens are not included in the count.

## A List of Numbers

The numbers from 2 to 10,000 are:

2, 3, 7, 23, 37, 79, 83, 97, 101, 131, 149, 181, 191, 269, 281, 307, 337, 379, 383, 397, 419, 461, 541, 577, 601, 617, 631, 659, 691, 727, 733, 787, 797, 823, 827, 883, 887, 911, 919, 941, 977, 1013, 1019, 1051, 1061, 1129, 1151, 1153, 1163, 1171, 1213, 1229, 1289, 1319, 1361, 1459, 1481, 1531, 1549, 1559, 1613, 1619, 1657, 1663, 1667, 1699, 1741, 1811, 1861, 1931, 1949, 2011, 2113, 2129, 2141, 2143, 2153, 2161, 2213, 2239, 2243, 2251, 2267, 2311, 2341, 2351, 2417, 2459, 2521, 2531, 2549, 2591, 2647, 2657, 2663, 2671, 2689, 2699, 2711, 2713, 2719, 2741, 2819, 2851, 2861, 2917, 2969, 3011, 3067, 3089, 3119, 3251, 3373, 3407, 3613, 3709, 3877, 3907, 4003, 4007, 4027, 4079, 4093, 4159, 4217, 4231, 4259, 4441, 4451, 4513, 4519, 4561, 4621, 4649, 4691, 4703, 4919, 4951, 5003, 5023, 5087, 5231, 5281, 5303, 5413, 5419, 5441, 5519, 5659, 5669, 5807, 6011, 6073, 6113, 6143, 6151, 6163, 6199, 6229, 6247, 6257, 6263, 6271, 6299, 6311, 6361, 6421, 6449, 6469, 6481, 6491, 6521, 6569, 6581, 6619, 6653, 6661, 6689, 6719, 6761, 6841, 6917, 6949, 6959, 6991, 7039, 7043, 7057, 7151, 7211, 7213, 7219, 7309, 7507, 7873, 7877, 7907, 8009, 8011, 8039, 8053, 8089, 8111, 8161, 8219, 8311, 8377, 8641, 9007, 9181, 9221, 9281, 9413, 9419, 9461, 9511, 9551, 9631, 9649, 9803, 9941

## A Table with English Names and Letter Count

The numbers from 2 to 10,000 are:

No. English Name Letters
2 two 3
3 three 5
7 seven 5
23 twenty-three 11
37 thirty-seven 11
79 seventy-nine 11
83 eighty-three 11
97 ninety-seven 11
101 one hundred one 13
131 one hundred thirty-one 19
149 one hundred forty-nine 19
181 one hundred eighty-one 19
191 one hundred ninety-one 19
269 two hundred sixty-nine 19
281 two hundred eighty-one 19
307 three hundred seven 17
337 three hundred thirty-seven 23
379 three hundred seventy-nine 23
383 three hundred eighty-three 23
397 three hundred ninety-seven 23
419 four hundred nineteen 19
461 four hundred sixty-one 19
541 five hundred forty-one 19
577 five hundred seventy-seven 23
601 six hundred one 13
617 six hundred seventeen 19
631 six hundred thirty-one 19
659 six hundred fifty-nine 19
691 six hundred ninety-one 19
727 seven hundred twenty-seven 23
733 seven hundred thirty-three 23
787 seven hundred eighty-seven 23
797 seven hundred ninety-seven 23
823 eight hundred twenty-three 23
827 eight hundred twenty-seven 23
883 eight hundred eighty-three 23
887 eight hundred eighty-seven 23
911 nine hundred eleven 17
919 nine hundred nineteen 19
941 nine hundred forty-one 19
977 nine hundred seventy-seven 23
1013 one thousand thirteen 19
1019 one thousand nineteen 19
1051 one thousand fifty-one 19
1061 one thousand sixty-one 19
1129 one thousand one hundred twenty-nine 31
1151 one thousand one hundred fifty-one 29
1153 one thousand one hundred fifty-three 31
1163 one thousand one hundred sixty-three 31
1171 one thousand one hundred seventy-one 31
1213 one thousand two hundred thirteen 29
1229 one thousand two hundred twenty-nine 31
1289 one thousand two hundred eighty-nine 31
1319 one thousand three hundred nineteen 31
1361 one thousand three hundred sixty-one 31
1459 one thousand four hundred fifty-nine 31
1481 one thousand four hundred eighty-one 31
1531 one thousand five hundred thirty-one 31
1549 one thousand five hundred forty-nine 31
1559 one thousand five hundred fifty-nine 31
1613 one thousand six hundred thirteen 29
1619 one thousand six hundred nineteen 29
1657 one thousand six hundred fifty-seven 31
1663 one thousand six hundred sixty-three 31
1667 one thousand six hundred sixty-seven 31
1699 one thousand six hundred ninety-nine 31
1741 one thousand seven hundred forty-one 31
1811 one thousand eight hundred eleven 29
1861 one thousand eight hundred sixty-one 31
1931 one thousand nine hundred thirty-one 31
1949 one thousand nine hundred forty-nine 31
2011 two thousand eleven 17
2113 two thousand one hundred thirteen 29
2129 two thousand one hundred twenty-nine 31
2141 two thousand one hundred forty-one 29
2143 two thousand one hundred forty-three 31
2153 two thousand one hundred fifty-three 31
2161 two thousand one hundred sixty-one 29
2213 two thousand two hundred thirteen 29
2239 two thousand two hundred thirty-nine 31
2243 two thousand two hundred forty-three 31
2251 two thousand two hundred fifty-one 29
2267 two thousand two hundred sixty-seven 31
2311 two thousand three hundred eleven 29
2341 two thousand three hundred forty-one 31
2351 two thousand three hundred fifty-one 31
2417 two thousand four hundred seventeen 31
2459 two thousand four hundred fifty-nine 31
2521 two thousand five hundred twenty-one 31
2531 two thousand five hundred thirty-one 31
2549 two thousand five hundred forty-nine 31
2591 two thousand five hundred ninety-one 31
2647 two thousand six hundred forty-seven 31
2657 two thousand six hundred fifty-seven 31
2663 two thousand six hundred sixty-three 31
2671 two thousand six hundred seventy-one 31
2689 two thousand six hundred eighty-nine 31
2699 two thousand six hundred ninety-nine 31
2711 two thousand seven hundred eleven 29
2713 two thousand seven hundred thirteen 31
2719 two thousand seven hundred nineteen 31
2741 two thousand seven hundred forty-one 31
2819 two thousand eight hundred nineteen 31
2851 two thousand eight hundred fifty-one 31
2861 two thousand eight hundred sixty-one 31
2917 two thousand nine hundred seventeen 31
2969 two thousand nine hundred sixty-nine 31
3011 three thousand eleven 19
3067 three thousand sixty-seven 23
3089 three thousand eighty-nine 23
3119 three thousand one hundred nineteen 31
3251 three thousand two hundred fifty-one 31
3373 three thousand three hundred seventy-three 37
3407 three thousand four hundred seven 29
3613 three thousand six hundred thirteen 31
3709 three thousand seven hundred nine 29
3877 three thousand eight hundred seventy-seven 37
3907 three thousand nine hundred seven 29
4003 four thousand three 17
4007 four thousand seven 17
4027 four thousand twenty-seven 23
4079 four thousand seventy-nine 23
4093 four thousand ninety-three 23
4159 four thousand one hundred fifty-nine 31
4217 four thousand two hundred seventeen 31
4231 four thousand two hundred thirty-one 31
4259 four thousand two hundred fifty-nine 31
4441 four thousand four hundred forty-one 31
4451 four thousand four hundred fifty-one 31
4513 four thousand five hundred thirteen 31
4519 four thousand five hundred nineteen 31
4561 four thousand five hundred sixty-one 31
4621 four thousand six hundred twenty-one 31
4649 four thousand six hundred forty-nine 31
4691 four thousand six hundred ninety-one 31
4703 four thousand seven hundred three 29
4919 four thousand nine hundred nineteen 31
4951 four thousand nine hundred fifty-one 31
5003 five thousand three 17
5023 five thousand twenty-three 23
5087 five thousand eighty-seven 23
5231 five thousand two hundred thirty-one 31
5281 five thousand two hundred eighty-one 31
5303 five thousand three hundred three 29
5413 five thousand four hundred thirteen 31
5419 five thousand four hundred nineteen 31
5441 five thousand four hundred forty-one 31
5519 five thousand five hundred nineteen 31
5659 five thousand six hundred fifty-nine 31
5669 five thousand six hundred sixty-nine 31
5807 five thousand eight hundred seven 29
6011 six thousand eleven 17
6073 six thousand seventy-three 23
6113 six thousand one hundred thirteen 29
6143 six thousand one hundred forty-three 31
6151 six thousand one hundred fifty-one 29
6163 six thousand one hundred sixty-three 31
6199 six thousand one hundred ninety-nine 31
6229 six thousand two hundred twenty-nine 31
6247 six thousand two hundred forty-seven 31
6257 six thousand two hundred fifty-seven 31
6263 six thousand two hundred sixty-three 31
6271 six thousand two hundred seventy-one 31
6299 six thousand two hundred ninety-nine 31
6311 six thousand three hundred eleven 29
6361 six thousand three hundred sixty-one 31
6421 six thousand four hundred twenty-one 31
6449 six thousand four hundred forty-nine 31
6469 six thousand four hundred sixty-nine 31
6481 six thousand four hundred eighty-one 31
6491 six thousand four hundred ninety-one 31
6521 six thousand five hundred twenty-one 31
6569 six thousand five hundred sixty-nine 31
6581 six thousand five hundred eighty-one 31
6619 six thousand six hundred nineteen 29
6653 six thousand six hundred fifty-three 31
6661 six thousand six hundred sixty-one 29
6689 six thousand six hundred eighty-nine 31
6719 six thousand seven hundred nineteen 31
6761 six thousand seven hundred sixty-one 31
6841 six thousand eight hundred forty-one 31
6917 six thousand nine hundred seventeen 31
6949 six thousand nine hundred forty-nine 31
6959 six thousand nine hundred fifty-nine 31
6991 six thousand nine hundred ninety-one 31
7039 seven thousand thirty-nine 23
7043 seven thousand forty-three 23
7057 seven thousand fifty-seven 23
7151 seven thousand one hundred fifty-one 31
7211 seven thousand two hundred eleven 29
7213 seven thousand two hundred thirteen 31
7219 seven thousand two hundred nineteen 31
7309 seven thousand three hundred nine 29
7507 seven thousand five hundred seven 29
7873 seven thousand eight hundred seventy-three 37
7877 seven thousand eight hundred seventy-seven 37
7907 seven thousand nine hundred seven 29
8009 eight thousand nine 17
8011 eight thousand eleven 19
8039 eight thousand thirty-nine 23
8053 eight thousand fifty-three 23
8089 eight thousand eighty-nine 23
8111 eight thousand one hundred eleven 29
8161 eight thousand one hundred sixty-one 31
8219 eight thousand two hundred nineteen 31
8311 eight thousand three hundred eleven 31
8377 eight thousand three hundred seventy-seven 37
8641 eight thousand six hundred forty-one 31
9007 nine thousand seven 17
9181 nine thousand one hundred eighty-one 31
9221 nine thousand two hundred twenty-one 31
9281 nine thousand two hundred eighty-one 31
9413 nine thousand four hundred thirteen 31
9419 nine thousand four hundred nineteen 31
9461 nine thousand four hundred sixty-one 31
9511 nine thousand five hundred eleven 29
9551 nine thousand five hundred fifty-one 31
9631 nine thousand six hundred thirty-one 31
9649 nine thousand six hundred forty-nine 31
9803 nine thousand eight hundred three 29
9941 nine thousand nine hundred forty-one 31

## Just for Fun: Numbers near One Quadrillion

In the last 1,000 numbers before one quadrillion ($$10^{15}$$ or 1,000,000,000,000,000), there are only three prime numbers whose English names have a prime number of letters:

No. English Name Letters
999999999999577 nine hundred ninety-nine trillion nine hundred ninety-nine billion nine hundred ninety-nine million nine hundred ninety-nine thousand five hundred seventy-seven 137
999999999999827 nine hundred ninety-nine trillion nine hundred ninety-nine billion nine hundred ninety-nine million nine hundred ninety-nine thousand eight hundred twenty-seven 137
999999999999883 nine hundred ninety-nine trillion nine hundred ninety-nine billion nine hundred ninety-nine million nine hundred ninety-nine thousand eight hundred eighty-three 137