λ
Sequence Observatory

6,518,319

3 × 2172773
Deficient Odd Composite

Starting at 6,518,319, the Collatz iteration reaches 1 after 196 steps. The first transition is 19554958; the starting value is odd with 4 positive divisors.

Prime Factor Structure

Factorization String 3 × 2172773
Distinct Prime Factors 2
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 4
Divisor Sum (σ) 8,691,096
Proper Divisor Sum 2,172,777
Digit Sum / Digital Root 33 (Root: 6)
Adjacent Primes #6518299 ← → #6518321

Radix Representation

Decimal 6518319
Binary 11000110111011000101111 (23 bits)
Octal 0o30673057
Hexadecimal 0x63762F

Divisor Catalog (4)

1 3 2,172,773 6,518,319

Collatz Trajectory (196 steps to reach 1)

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

6,518,319 19,554,958 9,777,479 29,332,438 14,666,219 43,998,658 21,999,329 65,997,988 32,998,994 16,499,497 49,498,492 24,749,246 12,374,623 37,123,870 18,561,935 55,685,806 27,842,903 83,528,710 41,764,355 125,293,066 62,646,533 187,939,600 93,969,800 46,984,900 23,492,450 11,746,225 35,238,676 17,619,338 8,809,669 26,429,008 13,214,504 6,607,252 3,303,626 1,651,813 4,955,440 2,477,720 1,238,860 619,430 309,715 929,146 464,573 1,393,720 696,860 348,430 174,215 522,646 261,323 783,970 391,985 1,175,956 587,978 293,989 881,968 440,984 220,492 110,246 55,123 165,370 82,685 248,056

More profiles

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