6,439,950

2 × 3² × 5² × 11 × 1301

Starting at 6,439,950, the Collatz iteration reaches 1 after 121 steps. The first transition is 3219975; the starting value is even with 72 positive divisors.

Prime Factor Structure

Factorization String 2 × 3^2 × 5^2 × 11 × 1301

Distinct Prime Factors 5

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 72

Divisor Sum (σ) 18,889,416

Proper Divisor Sum 12,449,466

Digit Sum / Digital Root 36 (Root: 9)

Adjacent Primes #6439949 ← → #6439969

Radix Representation

Decimal	6439950
Binary	11000100100010000001110 (23 bits)
Octal	0o30442016
Hexadecimal	0x62440E

Divisor Catalog (60 of 72)

1 2 3 5 6 9 10 11 15 18 22 25 30 33 45 50 55 66 75 90 99 110 150 165 198 225 275 330 450 495 550 825 990 1,301 1,650 2,475 2,602 3,903 4,950 6,505 7,806 11,709 13,010 14,311 19,515 23,418 28,622 32,525 39,030 42,933 58,545 65,050 71,555 85,866 97,575 117,090 128,799 143,110 195,150 214,665

Collatz Trajectory (121 steps to reach 1)

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

6,439,950 3,219,975 9,659,926 4,829,963 14,489,890 7,244,945 21,734,836 10,867,418 5,433,709 16,301,128 8,150,564 4,075,282 2,037,641 6,112,924 3,056,462 1,528,231 4,584,694 2,292,347 6,877,042 3,438,521 10,315,564 5,157,782 2,578,891 7,736,674 3,868,337 11,605,012 5,802,506 2,901,253 8,703,760 4,351,880 2,175,940 1,087,970 543,985 1,631,956 815,978 407,989 1,223,968 611,984 305,992 152,996 76,498 38,249 114,748 57,374 28,687 86,062 43,031 129,094 64,547 193,642 96,821 290,464 145,232 72,616 36,308 18,154 9,077 27,232 13,616 6,808

← Previous Integer #6,439,949 Browse Full Index Next Integer #6,439,951 →