λ
Sequence Observatory

6,615,919

6615919
Deficient Odd Prime

Starting at 6,615,919, the Collatz iteration reaches 1 after 147 steps. The first transition is 19847758; the starting value is odd with 2 positive divisors.

Prime Factor Structure

Factorization String 6615919
Distinct Prime Factors 1
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 2
Divisor Sum (σ) 6,615,920
Proper Divisor Sum 1
Digit Sum / Digital Root 37 (Root: 1)
Adjacent Primes #6615913 ← → #6615943

Radix Representation

Decimal 6615919
Binary 11001001111001101101111 (23 bits)
Octal 0o31171557
Hexadecimal 0x64F36F

Divisor Catalog (2)

Collatz Trajectory (147 steps to reach 1)

Iterative sequence n → n/2 (if even) or 3n+1 (if odd):

6,615,919 19,847,758 9,923,879 29,771,638 14,885,819 44,657,458 22,328,729 66,986,188 33,493,094 16,746,547 50,239,642 25,119,821 75,359,464 37,679,732 18,839,866 9,419,933 28,259,800 14,129,900 7,064,950 3,532,475 10,597,426 5,298,713 15,896,140 7,948,070 3,974,035 11,922,106 5,961,053 17,883,160 8,941,580 4,470,790 2,235,395 6,706,186 3,353,093 10,059,280 5,029,640 2,514,820 1,257,410 628,705 1,886,116 943,058 471,529 1,414,588 707,294 353,647 1,060,942 530,471 1,591,414 795,707 2,387,122 1,193,561 3,580,684 1,790,342 895,171 2,685,514 1,342,757 4,028,272 2,014,136 1,007,068 503,534 251,767

More profiles

← Previous Integer #6,615,918 Browse Full Index Next Integer #6,615,920 →