1,321,838

2 × 7 × 263 × 359

Starting at 1,321,838, the Collatz iteration reaches 1 after 98 steps. The first transition is 660919; the starting value is even with 16 positive divisors.

Prime Factor Structure

Factorization String 2 × 7 × 263 × 359

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 2,280,960

Proper Divisor Sum 959,122

Digit Sum / Digital Root 26 (Root: 8)

Adjacent Primes #1321823 ← → #1321841

Radix Representation

Decimal	1321838
Binary	101000010101101101110 (21 bits)
Octal	0o5025556
Hexadecimal	0x142B6E

Divisor Catalog (16)

1 2 7 14 263 359 526 718 1,841 2,513 3,682 5,026 94,417 188,834 660,919 1,321,838

Collatz Trajectory (98 steps to reach 1)

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

1,321,838 660,919 1,982,758 991,379 2,974,138 1,487,069 4,461,208 2,230,604 1,115,302 557,651 1,672,954 836,477 2,509,432 1,254,716 627,358 313,679 941,038 470,519 1,411,558 705,779 2,117,338 1,058,669 3,176,008 1,588,004 794,002 397,001 1,191,004 595,502 297,751 893,254 446,627 1,339,882 669,941 2,009,824 1,004,912 502,456 251,228 125,614 62,807 188,422 94,211 282,634 141,317 423,952 211,976 105,988 52,994 26,497 79,492 39,746 19,873 59,620 29,810 14,905 44,716 22,358 11,179 33,538 16,769 50,308

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